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Finding the Fourth Proportional to 113,197.78, 156,202.79 and 62,209.92

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Solution

The fourth proportional to 113,197.78, 156,202.79 and 62,209.92 is: 85,844.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,197.78 : 156,202.79 = 62,209.92 : x
  2. Step 2: Convert to fraction form
    113,197.78/156,202.79 = 62,209.92/x
  3. Step 3: Cross multiply
    113,197.78x = 156,202.79 × 62,209.92
  4. Step 4: Simplify right side
    113,197.78x = 9,717,363,069.68
  5. Step 5: Solve for x
    x = 9,717,363,069.68/113,197.78
  6. Step 6: Final answer
    x = 85,844.11

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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.