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Finding the Fourth Proportional to 67,079.67, 100,640.58 and 27,655.35

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Solution

The fourth proportional to 67,079.67, 100,640.58 and 27,655.35 is: 41,491.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,079.67 : 100,640.58 = 27,655.35 : x
  2. Step 2: Convert to fraction form
    67,079.67/100,640.58 = 27,655.35/x
  3. Step 3: Cross multiply
    67,079.67x = 100,640.58 × 27,655.35
  4. Step 4: Simplify right side
    67,079.67x = 2,783,250,464.10
  5. Step 5: Solve for x
    x = 2,783,250,464.10/67,079.67
  6. Step 6: Final answer
    x = 41,491.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.