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Finding the Fourth Proportional to 3,362.13, 5,043.17 and 863.30

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Solution

The fourth proportional to 3,362.13, 5,043.17 and 863.30 is: 1,294.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,362.13 : 5,043.17 = 863.30 : x
  2. Step 2: Convert to fraction form
    3,362.13/5,043.17 = 863.30/x
  3. Step 3: Cross multiply
    3,362.13x = 5,043.17 × 863.30
  4. Step 4: Simplify right side
    3,362.13x = 4,353,768.66
  5. Step 5: Solve for x
    x = 4,353,768.66/3,362.13
  6. Step 6: Final answer
    x = 1,294.95

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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.