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Finding the Fourth Proportional to 124,758.85, 187,082.92 and 77,372.03

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Solution

The fourth proportional to 124,758.85, 187,082.92 and 77,372.03 is: 116,023.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,758.85 : 187,082.92 = 77,372.03 : x
  2. Step 2: Convert to fraction form
    124,758.85/187,082.92 = 77,372.03/x
  3. Step 3: Cross multiply
    124,758.85x = 187,082.92 × 77,372.03
  4. Step 4: Simplify right side
    124,758.85x = 14,474,984,375.59
  5. Step 5: Solve for x
    x = 14,474,984,375.59/124,758.85
  6. Step 6: Final answer
    x = 116,023.71

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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.