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Finding the Fourth Proportional to 2,203.88, 3,299.34 and 1,228.64

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Solution

The fourth proportional to 2,203.88, 3,299.34 and 1,228.64 is: 1,839.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,203.88 : 3,299.34 = 1,228.64 : x
  2. Step 2: Convert to fraction form
    2,203.88/3,299.34 = 1,228.64/x
  3. Step 3: Cross multiply
    2,203.88x = 3,299.34 × 1,228.64
  4. Step 4: Simplify right side
    2,203.88x = 4,053,701.10
  5. Step 5: Solve for x
    x = 4,053,701.10/2,203.88
  6. Step 6: Final answer
    x = 1,839.35

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.