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Finding the Fourth Proportional to 18,883.67, 28,324.05 and 5,736.11

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Solution

The fourth proportional to 18,883.67, 28,324.05 and 5,736.11 is: 8,603.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,883.67 : 28,324.05 = 5,736.11 : x
  2. Step 2: Convert to fraction form
    18,883.67/28,324.05 = 5,736.11/x
  3. Step 3: Cross multiply
    18,883.67x = 28,324.05 × 5,736.11
  4. Step 4: Simplify right side
    18,883.67x = 162,469,866.45
  5. Step 5: Solve for x
    x = 162,469,866.45/18,883.67
  6. Step 6: Final answer
    x = 8,603.72

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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.