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Finding the Fourth Proportional to 18,393.18, 27,568.15 and 8,511.58

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Solution

The fourth proportional to 18,393.18, 27,568.15 and 8,511.58 is: 12,757.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,393.18 : 27,568.15 = 8,511.58 : x
  2. Step 2: Convert to fraction form
    18,393.18/27,568.15 = 8,511.58/x
  3. Step 3: Cross multiply
    18,393.18x = 27,568.15 × 8,511.58
  4. Step 4: Simplify right side
    18,393.18x = 234,648,514.18
  5. Step 5: Solve for x
    x = 234,648,514.18/18,393.18
  6. Step 6: Final answer
    x = 12,757.37

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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.