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Finding the Fourth Proportional to 92,130.20, 138,114.30 and 62,451.80

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Solution

The fourth proportional to 92,130.20, 138,114.30 and 62,451.80 is: 93,622.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,130.20 : 138,114.30 = 62,451.80 : x
  2. Step 2: Convert to fraction form
    92,130.20/138,114.30 = 62,451.80/x
  3. Step 3: Cross multiply
    92,130.20x = 138,114.30 × 62,451.80
  4. Step 4: Simplify right side
    92,130.20x = 8,625,486,640.74
  5. Step 5: Solve for x
    x = 8,625,486,640.74/92,130.20
  6. Step 6: Final answer
    x = 93,622.79

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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.