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Finding the Fourth Proportional to 133,815.20, 200,722.80 and 133,815.20

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Solution

The fourth proportional to 133,815.20, 200,722.80 and 133,815.20 is: 200,722.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,815.20 : 200,722.80 = 133,815.20 : x
  2. Step 2: Convert to fraction form
    133,815.20/200,722.80 = 133,815.20/x
  3. Step 3: Cross multiply
    133,815.20x = 200,722.80 × 133,815.20
  4. Step 4: Simplify right side
    133,815.20x = 26,859,761,626.56
  5. Step 5: Solve for x
    x = 26,859,761,626.56/133,815.20
  6. Step 6: Final answer
    x = 200,722.80

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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.