Step 1: Find old shares.
Old ratio \(3:2:2\) ⇒ \(X=\frac{3}{7},\ Y=\frac{2}{7},\ Z=\frac{2}{7}\).
Step 2: Note new shares of continuing partners.
New ratio \(4:3\) ⇒ \(X=\frac{4}{7},\ Y=\frac{3}{7}\).
Step 3: Compute gains (New − Old).
\(X\)’s gain \(= \frac{4}{7}-\frac{3}{7}=\frac{1}{7}\).
\(Y\)’s gain \(= \frac{3}{7}-\frac{2}{7}=\frac{1}{7}\).
Step 4: Express as a ratio.
\(X:Y = \frac{1}{7}:\frac{1}{7} = 1:1\).
Final Answer:
\[
\boxed{\text{Gaining Ratio } X:Y = 1:1}
\]
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