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Finding the Fourth Proportional to 67,249.32, 100,873.98 and 20,502.20

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Solution

The fourth proportional to 67,249.32, 100,873.98 and 20,502.20 is: 30,753.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,249.32 : 100,873.98 = 20,502.20 : x
  2. Step 2: Convert to fraction form
    67,249.32/100,873.98 = 20,502.20/x
  3. Step 3: Cross multiply
    67,249.32x = 100,873.98 × 20,502.20
  4. Step 4: Simplify right side
    67,249.32x = 2,068,138,008.39
  5. Step 5: Solve for x
    x = 2,068,138,008.39/67,249.32
  6. Step 6: Final answer
    x = 30,753.29

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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.