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Finding the Fourth Proportional to 1,744.15, 2,616.55 and 574.22

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Solution

The fourth proportional to 1,744.15, 2,616.55 and 574.22 is: 861.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,744.15 : 2,616.55 = 574.22 : x
  2. Step 2: Convert to fraction form
    1,744.15/2,616.55 = 574.22/x
  3. Step 3: Cross multiply
    1,744.15x = 2,616.55 × 574.22
  4. Step 4: Simplify right side
    1,744.15x = 1,502,480.45
  5. Step 5: Solve for x
    x = 1,502,480.45/1,744.15
  6. Step 6: Final answer
    x = 861.44

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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.