Related Clues:

• Pro ___
• See 72-Across
• ___-tat
• Tat-tat preceder
• See 58-Down
• See 38-Across
• Pro ___ (proportionate)
• See 42-Down
• See 22-Down
• Pro follower
• Pro --- (proportionately)
• Pro ___ (proportionately)
• Pro --- (for the time being)
• See 43-Across
• Pro --- (proportionally)