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Finding the Fourth Proportional to 88,468.60, 132,702.90 and 70,972.60

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Solution

The fourth proportional to 88,468.60, 132,702.90 and 70,972.60 is: 106,458.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,468.60 : 132,702.90 = 70,972.60 : x
  2. Step 2: Convert to fraction form
    88,468.60/132,702.90 = 70,972.60/x
  3. Step 3: Cross multiply
    88,468.60x = 132,702.90 × 70,972.60
  4. Step 4: Simplify right side
    88,468.60x = 9,418,269,840.54
  5. Step 5: Solve for x
    x = 9,418,269,840.54/88,468.60
  6. Step 6: Final answer
    x = 106,458.90

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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.