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Finding the Fourth Proportional to 167,870.76, 231,660.90 and 92,419.20

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Solution

The fourth proportional to 167,870.76, 231,660.90 and 92,419.20 is: 127,538.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,870.76 : 231,660.90 = 92,419.20 : x
  2. Step 2: Convert to fraction form
    167,870.76/231,660.90 = 92,419.20/x
  3. Step 3: Cross multiply
    167,870.76x = 231,660.90 × 92,419.20
  4. Step 4: Simplify right side
    167,870.76x = 21,409,915,049.28
  5. Step 5: Solve for x
    x = 21,409,915,049.28/167,870.76
  6. Step 6: Final answer
    x = 127,538.08

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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.