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Finding the Fourth Proportional to 122,566.87, 169,160.57 and 74,847.88

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Solution

The fourth proportional to 122,566.87, 169,160.57 and 74,847.88 is: 103,301.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,566.87 : 169,160.57 = 74,847.88 : x
  2. Step 2: Convert to fraction form
    122,566.87/169,160.57 = 74,847.88/x
  3. Step 3: Cross multiply
    122,566.87x = 169,160.57 × 74,847.88
  4. Step 4: Simplify right side
    122,566.87x = 12,661,310,044.09
  5. Step 5: Solve for x
    x = 12,661,310,044.09/122,566.87
  6. Step 6: Final answer
    x = 103,301.24

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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.