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Finding the Fourth Proportional to 1,744.76, 2,616.18 and 1,128.44

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Solution

The fourth proportional to 1,744.76, 2,616.18 and 1,128.44 is: 1,692.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,744.76 : 2,616.18 = 1,128.44 : x
  2. Step 2: Convert to fraction form
    1,744.76/2,616.18 = 1,128.44/x
  3. Step 3: Cross multiply
    1,744.76x = 2,616.18 × 1,128.44
  4. Step 4: Simplify right side
    1,744.76x = 2,952,202.16
  5. Step 5: Solve for x
    x = 2,952,202.16/1,744.76
  6. Step 6: Final answer
    x = 1,692.04

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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.