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Finding the Fourth Proportional to 7,210.88, 9,951.90 and 4,067

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Solution

The fourth proportional to 7,210.88, 9,951.90 and 4,067 is: 5,612.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,210.88 : 9,951.90 = 4,067 : x
  2. Step 2: Convert to fraction form
    7,210.88/9,951.90 = 4,067/x
  3. Step 3: Cross multiply
    7,210.88x = 9,951.90 × 4,067
  4. Step 4: Simplify right side
    7,210.88x = 40,474,377.30
  5. Step 5: Solve for x
    x = 40,474,377.30/7,210.88
  6. Step 6: Final answer
    x = 5,612.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.