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Future value of a present value or present sum (given periodic interest rate,number of period)
future value or value at time=n
present value or value at time=0
discount rate or the interest rate at which the amount will be compounded each period
number of periods
The current worth of a future sum of money or stream of cash flows given a specified rate of return. Future cash flows are discounted at the discount rate, and the higher the discount rate, the lower the present value of the future cash flows. Determining the appropriate discount rate is the key to properly valuing future cash flows, whether they be earnings or obligations. This formula is used to calculate the future value of a present sum.