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Finding the Fourth Proportional to 36,387.52, 50,211.22 and 20,471.64

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Solution

The fourth proportional to 36,387.52, 50,211.22 and 20,471.64 is: 28,248.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,387.52 : 50,211.22 = 20,471.64 : x
  2. Step 2: Convert to fraction form
    36,387.52/50,211.22 = 20,471.64/x
  3. Step 3: Cross multiply
    36,387.52x = 50,211.22 × 20,471.64
  4. Step 4: Simplify right side
    36,387.52x = 1,027,906,019.80
  5. Step 5: Solve for x
    x = 1,027,906,019.80/36,387.52
  6. Step 6: Final answer
    x = 28,248.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.