{
  "name": "比例計算機（三数法）",
  "short_name": "比例計算機（三数法）",
  "description": "数学的な比例計算を瞬時に解決します。数量、レシピ、割引、換算を計算するための決定版ツール。",
  "start_url": "/ja/utilities/categories/tools/rule-of-three/",
  "scope": "/ja/utilities/categories/tools/rule-of-three/",
  "icons": [
    {
      "src": "/images/utilities/rule-of-three.webp",
      "sizes": "512x512",
      "type": "image/webp",
      "purpose": "any"
    }
  ],
  "theme_color": "#0f172a",
  "background_color": "#0f172a",
  "display": "standalone",
  "orientation": "portrait"
}