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Finding the Fourth Proportional to 108,661.20, 149,951.97 and 60,914.49

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Solution

The fourth proportional to 108,661.20, 149,951.97 and 60,914.49 is: 84,061.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,661.20 : 149,951.97 = 60,914.49 : x
  2. Step 2: Convert to fraction form
    108,661.20/149,951.97 = 60,914.49/x
  3. Step 3: Cross multiply
    108,661.20x = 149,951.97 × 60,914.49
  4. Step 4: Simplify right side
    108,661.20x = 9,134,247,777.05
  5. Step 5: Solve for x
    x = 9,134,247,777.05/108,661.20
  6. Step 6: Final answer
    x = 84,061.72

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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.