\[ \frac{4(3b^6)^2}{b^{12}b^2} = \frac{4 \cdot 9b^{12}}{b^{14}} = \frac{36}{b^2} \]
\[ \frac{36}{(\sqrt{48})^2} = \frac{36}{48} = \frac{3}{4} = 0.75 \]
Ответ: 0.75