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Finding the Fourth Proportional to 317,749.88, 476,624.55 and 81,092.54

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Solution

The fourth proportional to 317,749.88, 476,624.55 and 81,092.54 is: 121,638.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,749.88 : 476,624.55 = 81,092.54 : x
  2. Step 2: Convert to fraction form
    317,749.88/476,624.55 = 81,092.54/x
  3. Step 3: Cross multiply
    317,749.88x = 476,624.55 × 81,092.54
  4. Step 4: Simplify right side
    317,749.88x = 38,650,695,385.86
  5. Step 5: Solve for x
    x = 38,650,695,385.86/317,749.88
  6. Step 6: Final answer
    x = 121,638.74

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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.