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Finding the Fourth Proportional to 18,523.99, 27,766.06 and 7,998.96

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Solution

The fourth proportional to 18,523.99, 27,766.06 and 7,998.96 is: 11,989.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,523.99 : 27,766.06 = 7,998.96 : x
  2. Step 2: Convert to fraction form
    18,523.99/27,766.06 = 7,998.96/x
  3. Step 3: Cross multiply
    18,523.99x = 27,766.06 × 7,998.96
  4. Step 4: Simplify right side
    18,523.99x = 222,099,687.42
  5. Step 5: Solve for x
    x = 222,099,687.42/18,523.99
  6. Step 6: Final answer
    x = 11,989.84

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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.