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Finding the Fourth Proportional to 122,311.70, 183,467.55 and 88,961.30

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Solution

The fourth proportional to 122,311.70, 183,467.55 and 88,961.30 is: 133,441.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,311.70 : 183,467.55 = 88,961.30 : x
  2. Step 2: Convert to fraction form
    122,311.70/183,467.55 = 88,961.30/x
  3. Step 3: Cross multiply
    122,311.70x = 183,467.55 × 88,961.30
  4. Step 4: Simplify right side
    122,311.70x = 16,321,511,755.82
  5. Step 5: Solve for x
    x = 16,321,511,755.82/122,311.70
  6. Step 6: Final answer
    x = 133,441.95

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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.