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Finding the Fourth Proportional to 104,860.70, 156,983.85 and 92,572.70

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Solution

The fourth proportional to 104,860.70, 156,983.85 and 92,572.70 is: 138,587.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,860.70 : 156,983.85 = 92,572.70 : x
  2. Step 2: Convert to fraction form
    104,860.70/156,983.85 = 92,572.70/x
  3. Step 3: Cross multiply
    104,860.70x = 156,983.85 × 92,572.70
  4. Step 4: Simplify right side
    104,860.70x = 14,532,418,850.90
  5. Step 5: Solve for x
    x = 14,532,418,850.90/104,860.70
  6. Step 6: Final answer
    x = 138,587.85

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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.