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Finding the Fourth Proportional to 203,932.70, 305,899.05 and 133,073.90

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Solution

The fourth proportional to 203,932.70, 305,899.05 and 133,073.90 is: 199,610.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,932.70 : 305,899.05 = 133,073.90 : x
  2. Step 2: Convert to fraction form
    203,932.70/305,899.05 = 133,073.90/x
  3. Step 3: Cross multiply
    203,932.70x = 305,899.05 × 133,073.90
  4. Step 4: Simplify right side
    203,932.70x = 40,707,179,589.80
  5. Step 5: Solve for x
    x = 40,707,179,589.80/203,932.70
  6. Step 6: Final answer
    x = 199,610.85

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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.