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Finding the Fourth Proportional to 1,469.54, 2,202.77 and 1,078.95

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Solution

The fourth proportional to 1,469.54, 2,202.77 and 1,078.95 is: 1,617.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,469.54 : 2,202.77 = 1,078.95 : x
  2. Step 2: Convert to fraction form
    1,469.54/2,202.77 = 1,078.95/x
  3. Step 3: Cross multiply
    1,469.54x = 2,202.77 × 1,078.95
  4. Step 4: Simplify right side
    1,469.54x = 2,376,683.58
  5. Step 5: Solve for x
    x = 2,376,683.58/1,469.54
  6. Step 6: Final answer
    x = 1,617.30

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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.