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Finding the Fourth Proportional to 125,170.96, 187,767.96 and 40,931.56

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Solution

The fourth proportional to 125,170.96, 187,767.96 and 40,931.56 is: 61,401.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,170.96 : 187,767.96 = 40,931.56 : x
  2. Step 2: Convert to fraction form
    125,170.96/187,767.96 = 40,931.56/x
  3. Step 3: Cross multiply
    125,170.96x = 187,767.96 × 40,931.56
  4. Step 4: Simplify right side
    125,170.96x = 7,685,635,520.82
  5. Step 5: Solve for x
    x = 7,685,635,520.82/125,170.96
  6. Step 6: Final answer
    x = 61,401.11

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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.