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Finding the Fourth Proportional to 18,758.48, 25,906.06 and 16,228.42

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Solution

The fourth proportional to 18,758.48, 25,906.06 and 16,228.42 is: 22,411.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,758.48 : 25,906.06 = 16,228.42 : x
  2. Step 2: Convert to fraction form
    18,758.48/25,906.06 = 16,228.42/x
  3. Step 3: Cross multiply
    18,758.48x = 25,906.06 × 16,228.42
  4. Step 4: Simplify right side
    18,758.48x = 420,414,422.23
  5. Step 5: Solve for x
    x = 420,414,422.23/18,758.48
  6. Step 6: Final answer
    x = 22,411.97

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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.