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Finding the Fourth Proportional to 3,692.76, 5,542.38 and 1,939.02

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Solution

The fourth proportional to 3,692.76, 5,542.38 and 1,939.02 is: 2,910.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,692.76 : 5,542.38 = 1,939.02 : x
  2. Step 2: Convert to fraction form
    3,692.76/5,542.38 = 1,939.02/x
  3. Step 3: Cross multiply
    3,692.76x = 5,542.38 × 1,939.02
  4. Step 4: Simplify right side
    3,692.76x = 10,746,785.67
  5. Step 5: Solve for x
    x = 10,746,785.67/3,692.76
  6. Step 6: Final answer
    x = 2,910.23

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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.