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Finding the Fourth Proportional to 18,472.05, 25,474.13 and 14,707.65

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Solution

The fourth proportional to 18,472.05, 25,474.13 and 14,707.65 is: 20,282.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,472.05 : 25,474.13 = 14,707.65 : x
  2. Step 2: Convert to fraction form
    18,472.05/25,474.13 = 14,707.65/x
  3. Step 3: Cross multiply
    18,472.05x = 25,474.13 × 14,707.65
  4. Step 4: Simplify right side
    18,472.05x = 374,664,514.56
  5. Step 5: Solve for x
    x = 374,664,514.56/18,472.05
  6. Step 6: Final answer
    x = 20,282.78

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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.