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Finding the Fourth Proportional to 18,687.92, 25,788.30 and 11,614.28

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Solution

The fourth proportional to 18,687.92, 25,788.30 and 11,614.28 is: 16,027.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,687.92 : 25,788.30 = 11,614.28 : x
  2. Step 2: Convert to fraction form
    18,687.92/25,788.30 = 11,614.28/x
  3. Step 3: Cross multiply
    18,687.92x = 25,788.30 × 11,614.28
  4. Step 4: Simplify right side
    18,687.92x = 299,512,536.92
  5. Step 5: Solve for x
    x = 299,512,536.92/18,687.92
  6. Step 6: Final answer
    x = 16,027.07

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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.