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Finding the Fourth Proportional to 123,651.40, 170,639.13 and 67,062.82

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Solution

The fourth proportional to 123,651.40, 170,639.13 and 67,062.82 is: 92,546.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,651.40 : 170,639.13 = 67,062.82 : x
  2. Step 2: Convert to fraction form
    123,651.40/170,639.13 = 67,062.82/x
  3. Step 3: Cross multiply
    123,651.40x = 170,639.13 × 67,062.82
  4. Step 4: Simplify right side
    123,651.40x = 11,443,541,260.15
  5. Step 5: Solve for x
    x = 11,443,541,260.15/123,651.40
  6. Step 6: Final answer
    x = 92,546.80

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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.