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Finding the Fourth Proportional to 71,018.70, 106,520.18 and 25,424.59

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Solution

The fourth proportional to 71,018.70, 106,520.18 and 25,424.59 is: 38,134.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,018.70 : 106,520.18 = 25,424.59 : x
  2. Step 2: Convert to fraction form
    71,018.70/106,520.18 = 25,424.59/x
  3. Step 3: Cross multiply
    71,018.70x = 106,520.18 × 25,424.59
  4. Step 4: Simplify right side
    71,018.70x = 2,708,231,370.63
  5. Step 5: Solve for x
    x = 2,708,231,370.63/71,018.70
  6. Step 6: Final answer
    x = 38,134.06

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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.