abc is similar to def. find the ratio between def and abc. express the answer as a fraction in simplest form

To find the ratio between def and abc, we need to compare their corresponding parts. Since all the corresponding parts of abc and def are similar, the ratio between them is equal to the ratio of any corresponding part.

Let's assume the corresponding parts of abc and def are a, b, and c. Therefore, we have:
abc : def = a : d = b : e = c : f

Hence, the ratio between def and abc is a : d.

To express this ratio as a fraction in simplest form, we need to ensure that a and d have no common factors.