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Finding the Fourth Proportional to 133,872.52, 200,535.40 and 74,739.68

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Solution

The fourth proportional to 133,872.52, 200,535.40 and 74,739.68 is: 111,956.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,872.52 : 200,535.40 = 74,739.68 : x
  2. Step 2: Convert to fraction form
    133,872.52/200,535.40 = 74,739.68/x
  3. Step 3: Cross multiply
    133,872.52x = 200,535.40 × 74,739.68
  4. Step 4: Simplify right side
    133,872.52x = 14,987,951,624.67
  5. Step 5: Solve for x
    x = 14,987,951,624.67/133,872.52
  6. Step 6: Final answer
    x = 111,956.89

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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.