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Finding the Fourth Proportional to 167,876.96, 231,671.60 and 91,396.58

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Solution

The fourth proportional to 167,876.96, 231,671.60 and 91,396.58 is: 126,128.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,876.96 : 231,671.60 = 91,396.58 : x
  2. Step 2: Convert to fraction form
    167,876.96/231,671.60 = 91,396.58/x
  3. Step 3: Cross multiply
    167,876.96x = 231,671.60 × 91,396.58
  4. Step 4: Simplify right side
    167,876.96x = 21,173,991,923.13
  5. Step 5: Solve for x
    x = 21,173,991,923.13/167,876.96
  6. Step 6: Final answer
    x = 126,128.04

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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.