16. As shown in the figure, a water channel with an isosceles trapezoidal cross-section has its boundary deformed into a parabolic shape due to silt deposition (shown by the dashed line in the figure). The ratio of the original maximum flow to the current maximum flow is $\_\_\_\_$ [Figure]
III. Solution Questions (This section has 6 questions totaling 70 points. Solutions must include explanations, proofs, and calculation steps.)
16. As shown in the figure, a water channel with an isosceles trapezoidal cross-section has its boundary deformed into a parabolic shape due to silt deposition (shown by the dashed line in the figure). The ratio of the original maximum flow to the current maximum flow is $\_\_\_\_$\\
\includegraphics[max width=\textwidth, alt={}, center]{2127fd6c-54be-499a-a5e1-4b2b0a02c393-2_332_625_1181_228}
\section*{III. Solution Questions (This section has 6 questions totaling 70 points. Solutions must include explanations, proofs, and calculation steps.)}