Solution:Old ratio of A, B, and C = 3 : 2 : 1.
It is given that the new ratio between C and D will be the same as that between A and B, i.e., 3: 2. The relative ratio among A, B, and C will remain unchanged.
Let D's share = x.
Then, according to the ratio, C's share = (3/2)x.
Since A : B : C = 3 : 2 : 1,
we can multiply each term by C's equivalent (1 part = (3/2)x):
A = 3 x (3/2)x = (9/2)x
B = 2 x (3/2)x = 3х
C = (3/2)x; D = x
Multiply the entire ratio by 2 to remove fractions:
A : B : C : D = 9 : 6 : 3 : 2.
Thus, the new profit-sharing ratiois 9 : 6 : 3 : 2.