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Finding the Fourth Proportional to 92,513.40, 138,834.90 and 59,314.20

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Solution

The fourth proportional to 92,513.40, 138,834.90 and 59,314.20 is: 89,012.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,513.40 : 138,834.90 = 59,314.20 : x
  2. Step 2: Convert to fraction form
    92,513.40/138,834.90 = 59,314.20/x
  3. Step 3: Cross multiply
    92,513.40x = 138,834.90 × 59,314.20
  4. Step 4: Simplify right side
    92,513.40x = 8,234,881,025.58
  5. Step 5: Solve for x
    x = 8,234,881,025.58/92,513.40
  6. Step 6: Final answer
    x = 89,012.85

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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.