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Finding the Fourth Proportional to 118,071.88, 162,939.24 and 67,084.68

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Solution

The fourth proportional to 118,071.88, 162,939.24 and 67,084.68 is: 92,576.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,071.88 : 162,939.24 = 67,084.68 : x
  2. Step 2: Convert to fraction form
    118,071.88/162,939.24 = 67,084.68/x
  3. Step 3: Cross multiply
    118,071.88x = 162,939.24 × 67,084.68
  4. Step 4: Simplify right side
    118,071.88x = 10,930,726,163.82
  5. Step 5: Solve for x
    x = 10,930,726,163.82/118,071.88
  6. Step 6: Final answer
    x = 92,576.88

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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.