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Finding the Fourth Proportional to 18,694.96, 25,793.44 and 11,137.44

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Solution

The fourth proportional to 18,694.96, 25,793.44 and 11,137.44 is: 15,366.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,694.96 : 25,793.44 = 11,137.44 : x
  2. Step 2: Convert to fraction form
    18,694.96/25,793.44 = 11,137.44/x
  3. Step 3: Cross multiply
    18,694.96x = 25,793.44 × 11,137.44
  4. Step 4: Simplify right side
    18,694.96x = 287,272,890.39
  5. Step 5: Solve for x
    x = 287,272,890.39/18,694.96
  6. Step 6: Final answer
    x = 15,366.33

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1.5x scale

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.