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Finding the Fourth Proportional to 3,951.22, 5,931 and 1,761.46

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Solution

The fourth proportional to 3,951.22, 5,931 and 1,761.46 is: 2,644.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,951.22 : 5,931 = 1,761.46 : x
  2. Step 2: Convert to fraction form
    3,951.22/5,931 = 1,761.46/x
  3. Step 3: Cross multiply
    3,951.22x = 5,931 × 1,761.46
  4. Step 4: Simplify right side
    3,951.22x = 10,447,219.26
  5. Step 5: Solve for x
    x = 10,447,219.26/3,951.22
  6. Step 6: Final answer
    x = 2,644.05

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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.