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Finding the Fourth Proportional to 18,358.88, 25,337.43 and 10,906.88

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Solution

The fourth proportional to 18,358.88, 25,337.43 and 10,906.88 is: 15,052.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,358.88 : 25,337.43 = 10,906.88 : x
  2. Step 2: Convert to fraction form
    18,358.88/25,337.43 = 10,906.88/x
  3. Step 3: Cross multiply
    18,358.88x = 25,337.43 × 10,906.88
  4. Step 4: Simplify right side
    18,358.88x = 276,352,181.83
  5. Step 5: Solve for x
    x = 276,352,181.83/18,358.88
  6. Step 6: Final answer
    x = 15,052.78

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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.