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Finding the Fourth Proportional to 123,369.22, 170,252.76 and 74,954.68

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Solution

The fourth proportional to 123,369.22, 170,252.76 and 74,954.68 is: 103,439.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,369.22 : 170,252.76 = 74,954.68 : x
  2. Step 2: Convert to fraction form
    123,369.22/170,252.76 = 74,954.68/x
  3. Step 3: Cross multiply
    123,369.22x = 170,252.76 × 74,954.68
  4. Step 4: Simplify right side
    123,369.22x = 12,761,241,144.92
  5. Step 5: Solve for x
    x = 12,761,241,144.92/123,369.22
  6. Step 6: Final answer
    x = 103,439.42

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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.