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Finding the Fourth Proportional to 18,834.32, 28,231.44 and 8,952.73

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Solution

The fourth proportional to 18,834.32, 28,231.44 and 8,952.73 is: 13,419.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,834.32 : 28,231.44 = 8,952.73 : x
  2. Step 2: Convert to fraction form
    18,834.32/28,231.44 = 8,952.73/x
  3. Step 3: Cross multiply
    18,834.32x = 28,231.44 × 8,952.73
  4. Step 4: Simplify right side
    18,834.32x = 252,748,355.68
  5. Step 5: Solve for x
    x = 252,748,355.68/18,834.32
  6. Step 6: Final answer
    x = 13,419.56

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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.