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Finding the Fourth Proportional to 125,082.93, 187,629.86 and 40,842.43

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Solution

The fourth proportional to 125,082.93, 187,629.86 and 40,842.43 is: 61,265.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,082.93 : 187,629.86 = 40,842.43 : x
  2. Step 2: Convert to fraction form
    125,082.93/187,629.86 = 40,842.43/x
  3. Step 3: Cross multiply
    125,082.93x = 187,629.86 × 40,842.43
  4. Step 4: Simplify right side
    125,082.93x = 7,663,259,422.96
  5. Step 5: Solve for x
    x = 7,663,259,422.96/125,082.93
  6. Step 6: Final answer
    x = 61,265.43

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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.