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Finding the Fourth Proportional to 2,167.72, 3,250.90 and 706.54

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Solution

The fourth proportional to 2,167.72, 3,250.90 and 706.54 is: 1,059.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,167.72 : 3,250.90 = 706.54 : x
  2. Step 2: Convert to fraction form
    2,167.72/3,250.90 = 706.54/x
  3. Step 3: Cross multiply
    2,167.72x = 3,250.90 × 706.54
  4. Step 4: Simplify right side
    2,167.72x = 2,296,873.04
  5. Step 5: Solve for x
    x = 2,296,873.04/2,167.72
  6. Step 6: Final answer
    x = 1,059.58

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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.