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Finding the Fourth Proportional to 1,996.16, 2,994.60 and 825.52

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Solution

The fourth proportional to 1,996.16, 2,994.60 and 825.52 is: 1,238.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,996.16 : 2,994.60 = 825.52 : x
  2. Step 2: Convert to fraction form
    1,996.16/2,994.60 = 825.52/x
  3. Step 3: Cross multiply
    1,996.16x = 2,994.60 × 825.52
  4. Step 4: Simplify right side
    1,996.16x = 2,472,107.94
  5. Step 5: Solve for x
    x = 2,472,107.94/1,996.16
  6. Step 6: Final answer
    x = 1,238.43

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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.