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Finding the Fourth Proportional to 123,291.68, 170,151.50 and 69,581.39

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Solution

The fourth proportional to 123,291.68, 170,151.50 and 69,581.39 is: 96,027.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,291.68 : 170,151.50 = 69,581.39 : x
  2. Step 2: Convert to fraction form
    123,291.68/170,151.50 = 69,581.39/x
  3. Step 3: Cross multiply
    123,291.68x = 170,151.50 × 69,581.39
  4. Step 4: Simplify right side
    123,291.68x = 11,839,377,203.78
  5. Step 5: Solve for x
    x = 11,839,377,203.78/123,291.68
  6. Step 6: Final answer
    x = 96,027.39

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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.