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Finding the Fourth Proportional to 18,793.65, 28,193.74 and 6,314.90

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Solution

The fourth proportional to 18,793.65, 28,193.74 and 6,314.90 is: 9,473.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,793.65 : 28,193.74 = 6,314.90 : x
  2. Step 2: Convert to fraction form
    18,793.65/28,193.74 = 6,314.90/x
  3. Step 3: Cross multiply
    18,793.65x = 28,193.74 × 6,314.90
  4. Step 4: Simplify right side
    18,793.65x = 178,040,491.97
  5. Step 5: Solve for x
    x = 178,040,491.97/18,793.65
  6. Step 6: Final answer
    x = 9,473.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.