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Finding the Fourth Proportional to 291,761.34, 437,641.96 and 92,221.83

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Solution

The fourth proportional to 291,761.34, 437,641.96 and 92,221.83 is: 138,332.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,761.34 : 437,641.96 = 92,221.83 : x
  2. Step 2: Convert to fraction form
    291,761.34/437,641.96 = 92,221.83/x
  3. Step 3: Cross multiply
    291,761.34x = 437,641.96 × 92,221.83
  4. Step 4: Simplify right side
    291,761.34x = 40,360,142,435.99
  5. Step 5: Solve for x
    x = 40,360,142,435.99/291,761.34
  6. Step 6: Final answer
    x = 138,332.73

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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.