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Finding the Fourth Proportional to 18,942.65, 28,414.04 and 5,794.97

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Solution

The fourth proportional to 18,942.65, 28,414.04 and 5,794.97 is: 8,692.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,942.65 : 28,414.04 = 5,794.97 : x
  2. Step 2: Convert to fraction form
    18,942.65/28,414.04 = 5,794.97/x
  3. Step 3: Cross multiply
    18,942.65x = 28,414.04 × 5,794.97
  4. Step 4: Simplify right side
    18,942.65x = 164,658,480.40
  5. Step 5: Solve for x
    x = 164,658,480.40/18,942.65
  6. Step 6: Final answer
    x = 8,692.47

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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.