This is the 16356th most frequent Russian word.
рентабельную
Profitable.
Here, 'рентабельную' describes the strategy as being profitable or cost-effective.
Компания внедрила рентабельную стратегию для повышения прибыли.
The company implemented a profitable strategy to increase its profits.
In this case, 'рентабельную' refers to the alternative being economically advantageous.
Мы нашли рентабельную альтернативу для использования энергии.
We found a profitable alternative for energy usage.
Here, 'рентабельным' (masculine form) describes the project as being monetarily sustainable.