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Finding the Fourth Proportional to 18,699.48, 28,049.22 and 10,797.24

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Solution

The fourth proportional to 18,699.48, 28,049.22 and 10,797.24 is: 16,195.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,699.48 : 28,049.22 = 10,797.24 : x
  2. Step 2: Convert to fraction form
    18,699.48/28,049.22 = 10,797.24/x
  3. Step 3: Cross multiply
    18,699.48x = 28,049.22 × 10,797.24
  4. Step 4: Simplify right side
    18,699.48x = 302,854,160.15
  5. Step 5: Solve for x
    x = 302,854,160.15/18,699.48
  6. Step 6: Final answer
    x = 16,195.86

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Similar ratio
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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.