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Finding the Fourth Proportional to 7,893.44, 11,839.90 and 3,212.06

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Solution

The fourth proportional to 7,893.44, 11,839.90 and 3,212.06 is: 4,817.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,893.44 : 11,839.90 = 3,212.06 : x
  2. Step 2: Convert to fraction form
    7,893.44/11,839.90 = 3,212.06/x
  3. Step 3: Cross multiply
    7,893.44x = 11,839.90 × 3,212.06
  4. Step 4: Simplify right side
    7,893.44x = 38,030,469.19
  5. Step 5: Solve for x
    x = 38,030,469.19/7,893.44
  6. Step 6: Final answer
    x = 4,817.98

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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.