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Finding the Fourth Proportional to 122,737.76, 169,376.49 and 69,022.76

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Solution

The fourth proportional to 122,737.76, 169,376.49 and 69,022.76 is: 95,250.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,737.76 : 169,376.49 = 69,022.76 : x
  2. Step 2: Convert to fraction form
    122,737.76/169,376.49 = 69,022.76/x
  3. Step 3: Cross multiply
    122,737.76x = 169,376.49 × 69,022.76
  4. Step 4: Simplify right side
    122,737.76x = 11,690,832,011.19
  5. Step 5: Solve for x
    x = 11,690,832,011.19/122,737.76
  6. Step 6: Final answer
    x = 95,250.50

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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.