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Finding the Fourth Proportional to 21,839.96, 32,759.96 and 9,351.92

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Solution

The fourth proportional to 21,839.96, 32,759.96 and 9,351.92 is: 14,027.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,839.96 : 32,759.96 = 9,351.92 : x
  2. Step 2: Convert to fraction form
    21,839.96/32,759.96 = 9,351.92/x
  3. Step 3: Cross multiply
    21,839.96x = 32,759.96 × 9,351.92
  4. Step 4: Simplify right side
    21,839.96x = 306,368,560.26
  5. Step 5: Solve for x
    x = 306,368,560.26/21,839.96
  6. Step 6: Final answer
    x = 14,027.89

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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.