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Finding the Fourth Proportional to 136,694.52, 188,500.50 and 91,372.68

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Solution

The fourth proportional to 136,694.52, 188,500.50 and 91,372.68 is: 126,002.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,694.52 : 188,500.50 = 91,372.68 : x
  2. Step 2: Convert to fraction form
    136,694.52/188,500.50 = 91,372.68/x
  3. Step 3: Cross multiply
    136,694.52x = 188,500.50 × 91,372.68
  4. Step 4: Simplify right side
    136,694.52x = 17,223,795,866.34
  5. Step 5: Solve for x
    x = 17,223,795,866.34/136,694.52
  6. Step 6: Final answer
    x = 126,002.09

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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.