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Finding the Fourth Proportional to 122,260.86, 168,750 and 74,540.52

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Solution

The fourth proportional to 122,260.86, 168,750 and 74,540.52 is: 102,884.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,260.86 : 168,750 = 74,540.52 : x
  2. Step 2: Convert to fraction form
    122,260.86/168,750 = 74,540.52/x
  3. Step 3: Cross multiply
    122,260.86x = 168,750 × 74,540.52
  4. Step 4: Simplify right side
    122,260.86x = 12,578,712,750
  5. Step 5: Solve for x
    x = 12,578,712,750/122,260.86
  6. Step 6: Final answer
    x = 102,884.22

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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.