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Finding the Fourth Proportional to 167,866.31, 231,648.36 and 91,383.80

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Solution

The fourth proportional to 167,866.31, 231,648.36 and 91,383.80 is: 126,105.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,866.31 : 231,648.36 = 91,383.80 : x
  2. Step 2: Convert to fraction form
    167,866.31/231,648.36 = 91,383.80/x
  3. Step 3: Cross multiply
    167,866.31x = 231,648.36 × 91,383.80
  4. Step 4: Simplify right side
    167,866.31x = 21,168,907,400.57
  5. Step 5: Solve for x
    x = 21,168,907,400.57/167,866.31
  6. Step 6: Final answer
    x = 126,105.76

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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.