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Finding the Fourth Proportional to 113,605.91, 156,785.20 and 62,627.71

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Solution

The fourth proportional to 113,605.91, 156,785.20 and 62,627.71 is: 86,431.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,605.91 : 156,785.20 = 62,627.71 : x
  2. Step 2: Convert to fraction form
    113,605.91/156,785.20 = 62,627.71/x
  3. Step 3: Cross multiply
    113,605.91x = 156,785.20 × 62,627.71
  4. Step 4: Simplify right side
    113,605.91x = 9,819,097,724.75
  5. Step 5: Solve for x
    x = 9,819,097,724.75/113,605.91
  6. Step 6: Final answer
    x = 86,431.22

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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.