Possible Clues:

• *Convincing
• Mathematical ratio cannot get worked out
• Compelling to keep skin colour in proportion
• The company gets to be so touching in a mathematical sort of way
• Company chap accepting first indications from the accountants - normal ratio
• Pressing to include bronze with trigonometric function
• Function in which Brown is entertained by company fellow
• Brown enters compelling relationship
• Maths function
• In triangular relationship, cannot get out