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Finding the Fourth Proportional to 167,712.58, 231,440.88 and 91,229.86

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Solution

The fourth proportional to 167,712.58, 231,440.88 and 91,229.86 is: 125,895.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,712.58 : 231,440.88 = 91,229.86 : x
  2. Step 2: Convert to fraction form
    167,712.58/231,440.88 = 91,229.86/x
  3. Step 3: Cross multiply
    167,712.58x = 231,440.88 × 91,229.86
  4. Step 4: Simplify right side
    167,712.58x = 21,114,319,080.68
  5. Step 5: Solve for x
    x = 21,114,319,080.68/167,712.58
  6. Step 6: Final answer
    x = 125,895.86

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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.