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Finding the Fourth Proportional to 994.44, 1,372.15 and 552.26

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Solution

The fourth proportional to 994.44, 1,372.15 and 552.26 is: 762.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    994.44 : 1,372.15 = 552.26 : x
  2. Step 2: Convert to fraction form
    994.44/1,372.15 = 552.26/x
  3. Step 3: Cross multiply
    994.44x = 1,372.15 × 552.26
  4. Step 4: Simplify right side
    994.44x = 757,787.68
  5. Step 5: Solve for x
    x = 757,787.68/994.44
  6. Step 6: Final answer
    x = 762.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.