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Finding the Fourth Proportional to 21,997.44, 32,993.76 and 7,956.96

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Solution

The fourth proportional to 21,997.44, 32,993.76 and 7,956.96 is: 11,934.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,997.44 : 32,993.76 = 7,956.96 : x
  2. Step 2: Convert to fraction form
    21,997.44/32,993.76 = 7,956.96/x
  3. Step 3: Cross multiply
    21,997.44x = 32,993.76 × 7,956.96
  4. Step 4: Simplify right side
    21,997.44x = 262,530,028.57
  5. Step 5: Solve for x
    x = 262,530,028.57/21,997.44
  6. Step 6: Final answer
    x = 11,934.57

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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.