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Finding the Fourth Proportional to 1,747.78, 2,621.51 and 708.04

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Solution

The fourth proportional to 1,747.78, 2,621.51 and 708.04 is: 1,062.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,747.78 : 2,621.51 = 708.04 : x
  2. Step 2: Convert to fraction form
    1,747.78/2,621.51 = 708.04/x
  3. Step 3: Cross multiply
    1,747.78x = 2,621.51 × 708.04
  4. Step 4: Simplify right side
    1,747.78x = 1,856,140.31
  5. Step 5: Solve for x
    x = 1,856,140.31/1,747.78
  6. Step 6: Final answer
    x = 1,062.00

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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.