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Finding the Fourth Proportional to 2,168.80, 3,253.20 and 708.04

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Solution

The fourth proportional to 2,168.80, 3,253.20 and 708.04 is: 1,062.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,168.80 : 3,253.20 = 708.04 : x
  2. Step 2: Convert to fraction form
    2,168.80/3,253.20 = 708.04/x
  3. Step 3: Cross multiply
    2,168.80x = 3,253.20 × 708.04
  4. Step 4: Simplify right side
    2,168.80x = 2,303,395.73
  5. Step 5: Solve for x
    x = 2,303,395.73/2,168.80
  6. Step 6: Final answer
    x = 1,062.06

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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.