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Finding the Fourth Proportional to 135,916.20, 203,874.30 and 73,708.20

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Solution

The fourth proportional to 135,916.20, 203,874.30 and 73,708.20 is: 110,562.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,916.20 : 203,874.30 = 73,708.20 : x
  2. Step 2: Convert to fraction form
    135,916.20/203,874.30 = 73,708.20/x
  3. Step 3: Cross multiply
    135,916.20x = 203,874.30 × 73,708.20
  4. Step 4: Simplify right side
    135,916.20x = 15,027,207,679.26
  5. Step 5: Solve for x
    x = 15,027,207,679.26/135,916.20
  6. Step 6: Final answer
    x = 110,562.30

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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.