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Finding the Fourth Proportional to 83,490.68, 125,250.56 and 36,742.32

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Solution

The fourth proportional to 83,490.68, 125,250.56 and 36,742.32 is: 55,119.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,490.68 : 125,250.56 = 36,742.32 : x
  2. Step 2: Convert to fraction form
    83,490.68/125,250.56 = 36,742.32/x
  3. Step 3: Cross multiply
    83,490.68x = 125,250.56 × 36,742.32
  4. Step 4: Simplify right side
    83,490.68x = 4,601,996,155.70
  5. Step 5: Solve for x
    x = 4,601,996,155.70/83,490.68
  6. Step 6: Final answer
    x = 55,119.88

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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.