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Finding the Fourth Proportional to 167,447.66, 231,076.85 and 90,966.15

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Solution

The fourth proportional to 167,447.66, 231,076.85 and 90,966.15 is: 125,532.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,447.66 : 231,076.85 = 90,966.15 : x
  2. Step 2: Convert to fraction form
    167,447.66/231,076.85 = 90,966.15/x
  3. Step 3: Cross multiply
    167,447.66x = 231,076.85 × 90,966.15
  4. Step 4: Simplify right side
    167,447.66x = 21,020,170,943.80
  5. Step 5: Solve for x
    x = 21,020,170,943.80/167,447.66
  6. Step 6: Final answer
    x = 125,532.79

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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.