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Finding the Fourth Proportional to 122,626.98, 169,219.77 and 71,644.44

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Solution

The fourth proportional to 122,626.98, 169,219.77 and 71,644.44 is: 98,866.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,626.98 : 169,219.77 = 71,644.44 : x
  2. Step 2: Convert to fraction form
    122,626.98/169,219.77 = 71,644.44/x
  3. Step 3: Cross multiply
    122,626.98x = 169,219.77 × 71,644.44
  4. Step 4: Simplify right side
    122,626.98x = 12,123,655,658.58
  5. Step 5: Solve for x
    x = 12,123,655,658.58/122,626.98
  6. Step 6: Final answer
    x = 98,866.14

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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.