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Finding the Fourth Proportional to 18,581.70, 25,654.41 and 16,248.90

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Solution

The fourth proportional to 18,581.70, 25,654.41 and 16,248.90 is: 22,433.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,581.70 : 25,654.41 = 16,248.90 : x
  2. Step 2: Convert to fraction form
    18,581.70/25,654.41 = 16,248.90/x
  3. Step 3: Cross multiply
    18,581.70x = 25,654.41 × 16,248.90
  4. Step 4: Simplify right side
    18,581.70x = 416,855,942.65
  5. Step 5: Solve for x
    x = 416,855,942.65/18,581.70
  6. Step 6: Final answer
    x = 22,433.68

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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.