We are given that the initial sound has a decibel level of $90.0 \, \text{dB}$. We can use this information to find the initial intensity $I_1$:
$$
90.0 = 10 \log_{10} \left(\frac{I_1}{I_0}\right)
$$
Now, we can solve for $I_1$:
$$
I_1 = I_0 \cdot
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