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Finding the Fourth Proportional to 15,069.22, 20,793.31 and 8,693.31

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Solution

The fourth proportional to 15,069.22, 20,793.31 and 8,693.31 is: 11,995.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,069.22 : 20,793.31 = 8,693.31 : x
  2. Step 2: Convert to fraction form
    15,069.22/20,793.31 = 8,693.31/x
  3. Step 3: Cross multiply
    15,069.22x = 20,793.31 × 8,693.31
  4. Step 4: Simplify right side
    15,069.22x = 180,762,689.76
  5. Step 5: Solve for x
    x = 180,762,689.76/15,069.22
  6. Step 6: Final answer
    x = 11,995.49

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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.