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Finding the Fourth Proportional to 18,481.96, 27,742.67 and 7,957.19

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Solution

The fourth proportional to 18,481.96, 27,742.67 and 7,957.19 is: 11,944.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,481.96 : 27,742.67 = 7,957.19 : x
  2. Step 2: Convert to fraction form
    18,481.96/27,742.67 = 7,957.19/x
  3. Step 3: Cross multiply
    18,481.96x = 27,742.67 × 7,957.19
  4. Step 4: Simplify right side
    18,481.96x = 220,753,755.71
  5. Step 5: Solve for x
    x = 220,753,755.71/18,481.96
  6. Step 6: Final answer
    x = 11,944.28

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1.5x scale

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.