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Finding the Fourth Proportional to 2,548.44, 3,822.20 and 699.31

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Solution

The fourth proportional to 2,548.44, 3,822.20 and 699.31 is: 1,048.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,548.44 : 3,822.20 = 699.31 : x
  2. Step 2: Convert to fraction form
    2,548.44/3,822.20 = 699.31/x
  3. Step 3: Cross multiply
    2,548.44x = 3,822.20 × 699.31
  4. Step 4: Simplify right side
    2,548.44x = 2,672,910.52
  5. Step 5: Solve for x
    x = 2,672,910.52/2,548.44
  6. Step 6: Final answer
    x = 1,048.84

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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.