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Finding the Fourth Proportional to 18,651.92, 25,743.10 and 10,694.20

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Solution

The fourth proportional to 18,651.92, 25,743.10 and 10,694.20 is: 14,759.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,651.92 : 25,743.10 = 10,694.20 : x
  2. Step 2: Convert to fraction form
    18,651.92/25,743.10 = 10,694.20/x
  3. Step 3: Cross multiply
    18,651.92x = 25,743.10 × 10,694.20
  4. Step 4: Simplify right side
    18,651.92x = 275,301,860.02
  5. Step 5: Solve for x
    x = 275,301,860.02/18,651.92
  6. Step 6: Final answer
    x = 14,759.97

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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.