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Finding the Fourth Proportional to 113,479.31, 156,600.15 and 62,491.01

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Solution

The fourth proportional to 113,479.31, 156,600.15 and 62,491.01 is: 86,236.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,479.31 : 156,600.15 = 62,491.01 : x
  2. Step 2: Convert to fraction form
    113,479.31/156,600.15 = 62,491.01/x
  3. Step 3: Cross multiply
    113,479.31x = 156,600.15 × 62,491.01
  4. Step 4: Simplify right side
    113,479.31x = 9,786,101,539.65
  5. Step 5: Solve for x
    x = 9,786,101,539.65/113,479.31
  6. Step 6: Final answer
    x = 86,236.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.