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Finding the Fourth Proportional to 18,863.99, 26,033.01 and 11,311.55

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Solution

The fourth proportional to 18,863.99, 26,033.01 and 11,311.55 is: 15,610.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,863.99 : 26,033.01 = 11,311.55 : x
  2. Step 2: Convert to fraction form
    18,863.99/26,033.01 = 11,311.55/x
  3. Step 3: Cross multiply
    18,863.99x = 26,033.01 × 11,311.55
  4. Step 4: Simplify right side
    18,863.99x = 294,473,694.27
  5. Step 5: Solve for x
    x = 294,473,694.27/18,863.99
  6. Step 6: Final answer
    x = 15,610.36

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.