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Finding the Fourth Proportional to 22,234.70, 30,687.99 and 14,286.86

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Solution

The fourth proportional to 22,234.70, 30,687.99 and 14,286.86 is: 19,718.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,234.70 : 30,687.99 = 14,286.86 : x
  2. Step 2: Convert to fraction form
    22,234.70/30,687.99 = 14,286.86/x
  3. Step 3: Cross multiply
    22,234.70x = 30,687.99 × 14,286.86
  4. Step 4: Simplify right side
    22,234.70x = 438,435,016.81
  5. Step 5: Solve for x
    x = 438,435,016.81/22,234.70
  6. Step 6: Final answer
    x = 19,718.50

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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.