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Finding the Fourth Proportional to 133,963.68, 200,945.40 and 40,469.40

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Solution

The fourth proportional to 133,963.68, 200,945.40 and 40,469.40 is: 60,704.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,963.68 : 200,945.40 = 40,469.40 : x
  2. Step 2: Convert to fraction form
    133,963.68/200,945.40 = 40,469.40/x
  3. Step 3: Cross multiply
    133,963.68x = 200,945.40 × 40,469.40
  4. Step 4: Simplify right side
    133,963.68x = 8,132,139,770.76
  5. Step 5: Solve for x
    x = 8,132,139,770.76/133,963.68
  6. Step 6: Final answer
    x = 60,704.06

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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.