4 * 3 : 6 * 9 =

Let's solve this step by step:

1. First, we multiply 4 by 3: $$4 \cdot 3 = 12$$.
2. Then, we divide the result by 6: $$12 : 6 = 2$$.
3. Finally, we multiply the result by 9: $$2 \cdot 9 = 18$$.

Answer: 18