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Finding the Fourth Proportional to 92,761.55, 139,142.65 and 22,640.86

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Solution

The fourth proportional to 92,761.55, 139,142.65 and 22,640.86 is: 33,961.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,761.55 : 139,142.65 = 22,640.86 : x
  2. Step 2: Convert to fraction form
    92,761.55/139,142.65 = 22,640.86/x
  3. Step 3: Cross multiply
    92,761.55x = 139,142.65 × 22,640.86
  4. Step 4: Simplify right side
    92,761.55x = 3,150,309,258.68
  5. Step 5: Solve for x
    x = 3,150,309,258.68/92,761.55
  6. Step 6: Final answer
    x = 33,961.37

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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.