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Finding the Fourth Proportional to 18,808.01, 28,230.38 and 8,954.09

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Solution

The fourth proportional to 18,808.01, 28,230.38 and 8,954.09 is: 13,439.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,808.01 : 28,230.38 = 8,954.09 : x
  2. Step 2: Convert to fraction form
    18,808.01/28,230.38 = 8,954.09/x
  3. Step 3: Cross multiply
    18,808.01x = 28,230.38 × 8,954.09
  4. Step 4: Simplify right side
    18,808.01x = 252,777,318.48
  5. Step 5: Solve for x
    x = 252,777,318.48/18,808.01
  6. Step 6: Final answer
    x = 13,439.88

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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.