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Finding the Fourth Proportional to 123,894.18, 170,974.67 and 67,305.69

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Solution

The fourth proportional to 123,894.18, 170,974.67 and 67,305.69 is: 92,882.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,894.18 : 170,974.67 = 67,305.69 : x
  2. Step 2: Convert to fraction form
    123,894.18/170,974.67 = 67,305.69/x
  3. Step 3: Cross multiply
    123,894.18x = 170,974.67 × 67,305.69
  4. Step 4: Simplify right side
    123,894.18x = 11,507,567,800.34
  5. Step 5: Solve for x
    x = 11,507,567,800.34/123,894.18
  6. Step 6: Final answer
    x = 92,882.23

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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.