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Finding the Fourth Proportional to 167,790.59, 231,555.88 and 91,314.61

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Solution

The fourth proportional to 167,790.59, 231,555.88 and 91,314.61 is: 126,016.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,790.59 : 231,555.88 = 91,314.61 : x
  2. Step 2: Convert to fraction form
    167,790.59/231,555.88 = 91,314.61/x
  3. Step 3: Cross multiply
    167,790.59x = 231,555.88 × 91,314.61
  4. Step 4: Simplify right side
    167,790.59x = 21,144,434,410.66
  5. Step 5: Solve for x
    x = 21,144,434,410.66/167,790.59
  6. Step 6: Final answer
    x = 126,016.81

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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.