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Finding the Fourth Proportional to 122,754.46, 169,343.94 and 79,730.92

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Solution

The fourth proportional to 122,754.46, 169,343.94 and 79,730.92 is: 109,991.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,754.46 : 169,343.94 = 79,730.92 : x
  2. Step 2: Convert to fraction form
    122,754.46/169,343.94 = 79,730.92/x
  3. Step 3: Cross multiply
    122,754.46x = 169,343.94 × 79,730.92
  4. Step 4: Simplify right side
    122,754.46x = 13,501,948,132.62
  5. Step 5: Solve for x
    x = 13,501,948,132.62/122,754.46
  6. Step 6: Final answer
    x = 109,991.51

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.