и) $$\frac{17}{25}:1\frac{4}{27} = \frac{17}{25} : \frac{31}{27} = \frac{17}{25} \cdot \frac{27}{31} = \frac{17 \cdot 27}{25 \cdot 31} = \frac{459}{775}$$
Ответ: $$\frac{459}{775}$$