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Finding the Fourth Proportional to 135,912.60, 203,901.30 and 65,734.20

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Solution

The fourth proportional to 135,912.60, 203,901.30 and 65,734.20 is: 98,616.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,912.60 : 203,901.30 = 65,734.20 : x
  2. Step 2: Convert to fraction form
    135,912.60/203,901.30 = 65,734.20/x
  3. Step 3: Cross multiply
    135,912.60x = 203,901.30 × 65,734.20
  4. Step 4: Simplify right side
    135,912.60x = 13,403,288,834.46
  5. Step 5: Solve for x
    x = 13,403,288,834.46/135,912.60
  6. Step 6: Final answer
    x = 98,616.97

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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.