The term 'PROVED PROFITABLE' can be broken down into two words, 'PAID' and 'PROFITABLE'. The word 'PAID' is a four-letter word meaning to receive money for goods or services. The word 'PROFITABLE' means to make a gain or profit from an activity. Together, the term 'PROVED PROFITABLE' means that an activity has been successful in terms of making a profit. This could refer to a business venture, investment, or any other type of activity that has yielded a positive financial outcome.