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Finding the Fourth Proportional to 125,862.60, 188,793.90 and 76,096.20

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Solution

The fourth proportional to 125,862.60, 188,793.90 and 76,096.20 is: 114,144.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,862.60 : 188,793.90 = 76,096.20 : x
  2. Step 2: Convert to fraction form
    125,862.60/188,793.90 = 76,096.20/x
  3. Step 3: Cross multiply
    125,862.60x = 188,793.90 × 76,096.20
  4. Step 4: Simplify right side
    125,862.60x = 14,366,498,373.18
  5. Step 5: Solve for x
    x = 14,366,498,373.18/125,862.60
  6. Step 6: Final answer
    x = 114,144.30

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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.