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Finding the Fourth Proportional to 123,763.93, 170,789.66 and 67,174.09

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Solution

The fourth proportional to 123,763.93, 170,789.66 and 67,174.09 is: 92,697.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,763.93 : 170,789.66 = 67,174.09 : x
  2. Step 2: Convert to fraction form
    123,763.93/170,789.66 = 67,174.09/x
  3. Step 3: Cross multiply
    123,763.93x = 170,789.66 × 67,174.09
  4. Step 4: Simplify right side
    123,763.93x = 11,472,639,656.04
  5. Step 5: Solve for x
    x = 11,472,639,656.04/123,763.93
  6. Step 6: Final answer
    x = 92,697.76

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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.