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Finding the Fourth Proportional to 28,125.20, 42,187.80 and 24,366.80

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Solution

The fourth proportional to 28,125.20, 42,187.80 and 24,366.80 is: 36,550.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,125.20 : 42,187.80 = 24,366.80 : x
  2. Step 2: Convert to fraction form
    28,125.20/42,187.80 = 24,366.80/x
  3. Step 3: Cross multiply
    28,125.20x = 42,187.80 × 24,366.80
  4. Step 4: Simplify right side
    28,125.20x = 1,027,981,685.04
  5. Step 5: Solve for x
    x = 1,027,981,685.04/28,125.20
  6. Step 6: Final answer
    x = 36,550.20

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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.