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Finding the Fourth Proportional to 125,793.71, 188,690.57 and 86,230.88

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Solution

The fourth proportional to 125,793.71, 188,690.57 and 86,230.88 is: 129,346.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,793.71 : 188,690.57 = 86,230.88 : x
  2. Step 2: Convert to fraction form
    125,793.71/188,690.57 = 86,230.88/x
  3. Step 3: Cross multiply
    125,793.71x = 188,690.57 × 86,230.88
  4. Step 4: Simplify right side
    125,793.71x = 16,270,953,898.80
  5. Step 5: Solve for x
    x = 16,270,953,898.80/125,793.71
  6. Step 6: Final answer
    x = 129,346.32

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1.5x scale

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.