$$33:39 =3\frac{2}{3}:4\frac{1}{3}$$
$$33:3\frac{2}{3} = 39:4\frac{1}{3}$$
$$4\frac{1}{3}:39 = 3\frac{2}{3}:33$$
$$4\frac{1}{3}:3\frac{2}{3} = 39:33$$
Ответ: Новые пропорции: $$33:3\frac{2}{3} = 39:4\frac{1}{3}$$, $$4\frac{1}{3}:39 = 3\frac{2}{3}:33$$, $$4\frac{1}{3}:3\frac{2}{3} = 39:33$$