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Finding the Fourth Proportional to 317,590.08, 476,371.92 and 80,938.56

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Solution

The fourth proportional to 317,590.08, 476,371.92 and 80,938.56 is: 121,404.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,590.08 : 476,371.92 = 80,938.56 : x
  2. Step 2: Convert to fraction form
    317,590.08/476,371.92 = 80,938.56/x
  3. Step 3: Cross multiply
    317,590.08x = 476,371.92 × 80,938.56
  4. Step 4: Simplify right side
    317,590.08x = 38,556,857,229.24
  5. Step 5: Solve for x
    x = 38,556,857,229.24/317,590.08
  6. Step 6: Final answer
    x = 121,404.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.