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Finding the Fourth Proportional to 92,609.79, 127,759.80 and 54,371.70

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Solution

The fourth proportional to 92,609.79, 127,759.80 and 54,371.70 is: 75,008.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,609.79 : 127,759.80 = 54,371.70 : x
  2. Step 2: Convert to fraction form
    92,609.79/127,759.80 = 54,371.70/x
  3. Step 3: Cross multiply
    92,609.79x = 127,759.80 × 54,371.70
  4. Step 4: Simplify right side
    92,609.79x = 6,946,517,517.66
  5. Step 5: Solve for x
    x = 6,946,517,517.66/92,609.79
  6. Step 6: Final answer
    x = 75,008.46

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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.