An account invested in a money market fund grew from $\$ 73,263.43$ to $\$ 73,554.76$ in a month. What was the interest rate to the nearest tenth?

What was the interest rate?
$\%$
(Do not round until the final answer. Then round to the nearest tenth as needed.)

Answer

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Answer

$\boxed{0.4\%}$

Steps

Step 1 ：$73,554.76 - 73,263.43 = 291.33$

Step 2 ：$\frac{291.33}{73,263.43} * 100 = 0.3976\%$

Step 3 ：$\text{Rounding to the nearest tenth, the interest rate is } 0.4\%$

Step 4 ：$73,263.43 * 0.004 + 73,263.43 = 73,554.76$

Step 5 ：$\boxed{0.4\%}$