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Finding the Fourth Proportional to 170,793.56, 256,346.57 and 86,611.82

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Solution

The fourth proportional to 170,793.56, 256,346.57 and 86,611.82 is: 129,996.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,793.56 : 256,346.57 = 86,611.82 : x
  2. Step 2: Convert to fraction form
    170,793.56/256,346.57 = 86,611.82/x
  3. Step 3: Cross multiply
    170,793.56x = 256,346.57 × 86,611.82
  4. Step 4: Simplify right side
    170,793.56x = 22,202,641,913.25
  5. Step 5: Solve for x
    x = 22,202,641,913.25/170,793.56
  6. Step 6: Final answer
    x = 129,996.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.