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Finding the Fourth Proportional to 126,759.38, 174,876.71 and 73,015.61

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Solution

The fourth proportional to 126,759.38, 174,876.71 and 73,015.61 is: 100,732.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,759.38 : 174,876.71 = 73,015.61 : x
  2. Step 2: Convert to fraction form
    126,759.38/174,876.71 = 73,015.61/x
  3. Step 3: Cross multiply
    126,759.38x = 174,876.71 × 73,015.61
  4. Step 4: Simplify right side
    126,759.38x = 12,768,728,415.98
  5. Step 5: Solve for x
    x = 12,768,728,415.98/126,759.38
  6. Step 6: Final answer
    x = 100,732.02

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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.