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Finding the Fourth Proportional to 7,912.96, 11,867.98 and 2,069.24

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Solution

The fourth proportional to 7,912.96, 11,867.98 and 2,069.24 is: 3,103.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912.96 : 11,867.98 = 2,069.24 : x
  2. Step 2: Convert to fraction form
    7,912.96/11,867.98 = 2,069.24/x
  3. Step 3: Cross multiply
    7,912.96x = 11,867.98 × 2,069.24
  4. Step 4: Simplify right side
    7,912.96x = 24,557,698.94
  5. Step 5: Solve for x
    x = 24,557,698.94/7,912.96
  6. Step 6: Final answer
    x = 3,103.48

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1.5x scale

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.