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Finding the Fourth Proportional to 201,789.52, 278,469.52 and 116,955.79

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Solution

The fourth proportional to 201,789.52, 278,469.52 and 116,955.79 is: 161,398.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,789.52 : 278,469.52 = 116,955.79 : x
  2. Step 2: Convert to fraction form
    201,789.52/278,469.52 = 116,955.79/x
  3. Step 3: Cross multiply
    201,789.52x = 278,469.52 × 116,955.79
  4. Step 4: Simplify right side
    201,789.52x = 32,568,620,725.39
  5. Step 5: Solve for x
    x = 32,568,620,725.39/201,789.52
  6. Step 6: Final answer
    x = 161,398.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.