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Finding the Fourth Proportional to 133,043.70, 199,589.85 and 54,165.90

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Solution

The fourth proportional to 133,043.70, 199,589.85 and 54,165.90 is: 81,258.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,043.70 : 199,589.85 = 54,165.90 : x
  2. Step 2: Convert to fraction form
    133,043.70/199,589.85 = 54,165.90/x
  3. Step 3: Cross multiply
    133,043.70x = 199,589.85 × 54,165.90
  4. Step 4: Simplify right side
    133,043.70x = 10,810,963,856.12
  5. Step 5: Solve for x
    x = 10,810,963,856.12/133,043.70
  6. Step 6: Final answer
    x = 81,258.74

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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.