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Finding the Fourth Proportional to 104,589.81, 156,819.10 and 69,013.39

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Solution

The fourth proportional to 104,589.81, 156,819.10 and 69,013.39 is: 103,476.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,589.81 : 156,819.10 = 69,013.39 : x
  2. Step 2: Convert to fraction form
    104,589.81/156,819.10 = 69,013.39/x
  3. Step 3: Cross multiply
    104,589.81x = 156,819.10 × 69,013.39
  4. Step 4: Simplify right side
    104,589.81x = 10,822,617,707.75
  5. Step 5: Solve for x
    x = 10,822,617,707.75/104,589.81
  6. Step 6: Final answer
    x = 103,476.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.