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Finding the Fourth Proportional to 60,677.43, 91,057.17 and 21,234.90

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Solution

The fourth proportional to 60,677.43, 91,057.17 and 21,234.90 is: 31,866.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,677.43 : 91,057.17 = 21,234.90 : x
  2. Step 2: Convert to fraction form
    60,677.43/91,057.17 = 21,234.90/x
  3. Step 3: Cross multiply
    60,677.43x = 91,057.17 × 21,234.90
  4. Step 4: Simplify right side
    60,677.43x = 1,933,589,899.23
  5. Step 5: Solve for x
    x = 1,933,589,899.23/60,677.43
  6. Step 6: Final answer
    x = 31,866.71

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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.