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Finding the Fourth Proportional to 18,494.32, 27,736.50 and 8,623.96

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Solution

The fourth proportional to 18,494.32, 27,736.50 and 8,623.96 is: 12,933.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,494.32 : 27,736.50 = 8,623.96 : x
  2. Step 2: Convert to fraction form
    18,494.32/27,736.50 = 8,623.96/x
  3. Step 3: Cross multiply
    18,494.32x = 27,736.50 × 8,623.96
  4. Step 4: Simplify right side
    18,494.32x = 239,198,466.54
  5. Step 5: Solve for x
    x = 239,198,466.54/18,494.32
  6. Step 6: Final answer
    x = 12,933.62

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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.