Possible Clues:

• Grow strongly, being nearly three but coming across four
• Forth river bridges do well
• Couples initiating these risky ventures prosper
• Succeed in getting six runs written up in article
• Do well to make 4 go into 3? Not quite
• Not just survive
• Be highly successful
• Fare well
• Do well with riveting? Not entirely
• Grow well; prosper