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Finding the Fourth Proportional to 122,517.56, 169,092.54 and 74,798.64

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Solution

The fourth proportional to 122,517.56, 169,092.54 and 74,798.64 is: 103,233.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,517.56 : 169,092.54 = 74,798.64 : x
  2. Step 2: Convert to fraction form
    122,517.56/169,092.54 = 74,798.64/x
  3. Step 3: Cross multiply
    122,517.56x = 169,092.54 × 74,798.64
  4. Step 4: Simplify right side
    122,517.56x = 12,647,892,026.15
  5. Step 5: Solve for x
    x = 12,647,892,026.15/122,517.56
  6. Step 6: Final answer
    x = 103,233.30

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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.