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Finding the Fourth Proportional to 217,843.60, 326,785.54 and 84,733.96

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Solution

The fourth proportional to 217,843.60, 326,785.54 and 84,733.96 is: 127,108.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,843.60 : 326,785.54 = 84,733.96 : x
  2. Step 2: Convert to fraction form
    217,843.60/326,785.54 = 84,733.96/x
  3. Step 3: Cross multiply
    217,843.60x = 326,785.54 × 84,733.96
  4. Step 4: Simplify right side
    217,843.60x = 27,689,832,874.94
  5. Step 5: Solve for x
    x = 27,689,832,874.94/217,843.60
  6. Step 6: Final answer
    x = 127,108.77

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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.