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$100,000 invested at 4% for 40 years

Future value

$480,102

Interest earned

$380,102

Total growth

380.102%

Investing $100,000 at 4% compounded annually for 40 years grows to $480,102. That's $380,102 of compound interest earned on your original $100,000.

FV = $100,000 × (1 + 4%)^40

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