Peter Lynch's Price-to-Earnings-to-Growth ratio reframes valuation: a high P/E may be cheap if growth is high, a low P/E may be a trap if growth is fading. Using Titan Biotech FY25 audited inputs (10-yr revenue CAGR ~15%, 10-yr PAT CAGR ~29%, CFO/Operating Profit ~103%) as a clean educational illustration.