\[\boxed{\mathbf{838\ (838).\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[\frac{3}{8},\frac{3}{4},\frac{3}{2},\ \ldots,\ 96,\ \ldots\]
\[q = \frac{3}{4}\ :\frac{3}{8} = \frac{3 \cdot 8}{4 \cdot 3} = 2\]
\[96 = b_{1}q^{n - 1}\ \]
\[96 = \frac{3}{8} \cdot 2^{n - 1}\ \]
\[2^{n - 1} = \frac{96 \cdot 8}{3}\]
\[2^{n - 1} = 32 \cdot 8\ \]
\[2^{n - 1} = 2^{5} \cdot 2^{3}\ \]
\[2^{n - 1} = 2^{8}\]
\[n - 1 = 8 \Longrightarrow \ \ n = 9\]
\[Ответ:n = 9.\]