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Finding the Fourth Proportional to 167,785.92, 231,544.98 and 91,305

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Solution

The fourth proportional to 167,785.92, 231,544.98 and 91,305 is: 126,001.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,785.92 : 231,544.98 = 91,305 : x
  2. Step 2: Convert to fraction form
    167,785.92/231,544.98 = 91,305/x
  3. Step 3: Cross multiply
    167,785.92x = 231,544.98 × 91,305
  4. Step 4: Simplify right side
    167,785.92x = 21,141,214,398.90
  5. Step 5: Solve for x
    x = 21,141,214,398.90/167,785.92
  6. Step 6: Final answer
    x = 126,001.12

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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.