If money can be invested at 6 . \( 3 \% \) compounded quarterly, which is larger, \( \$ 8619 \) now or \( \$ 16,000 \) in 10 years? Use present value to decide. The present value of \( \$ 16,000 \) in 10 years is \( \$ \). (Do not round until the final answer. Then round to the nearest cent as needed)
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To determine which sum is larger, we need to calculate the present value (PV) of \$16,000 received in 10 years with an interest rate of 6.3% compounded quarterly. The formula for PV is: \[ PV = \frac{FV}{(1 + r/n)^{nt}} \] Where: - \(FV\) is the future value (\$16,000) - \(r\) is the annual interest rate (0.063) - \(n\) is the number of compounding periods per year (4 for quarterly) - \(t\) is the number of years (10) Plugging in the numbers: \[ PV = \frac{16000}{(1 + 0.063/4)^{4 \times 10}} = \frac{16000}{(1 + 0.01575)^{40}} = \frac{16000}{(1.01575)^{40}} \] Calculating \( (1.01575)^{40} \): \[ (1.01575)^{40} \approx 1.8687 \] Now, calculate the PV: \[ PV \approx \frac{16000}{1.8687} \approx 8561.75 \] Now, rounding to the nearest cent, the present value of \$16,000 in 10 years is approximately \$8,561.75. Now, comparing: - Present value of \$16,000: \$8,561.75 - Current amount: \$8,619.00 Therefore, \$8,619.00 is larger. --- To put this into a historical context, compounding interest has its roots back to ancient civilizations, where the concept started with basic loans and deposits. The modern formula derives from mathematicians in the 17th century, who refined these ideas into the principles we use today. If you're curious about how to make your money work even harder, consider learning about different investment vehicles like stocks, bonds, and real estate. Each option comes with different risk levels and return rates, which can give you a more personalized investment strategy!