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Finding the Fourth Proportional to 11,791.26, 17,693.10 and 5,221.98

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Solution

The fourth proportional to 11,791.26, 17,693.10 and 5,221.98 is: 7,835.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,791.26 : 17,693.10 = 5,221.98 : x
  2. Step 2: Convert to fraction form
    11,791.26/17,693.10 = 5,221.98/x
  3. Step 3: Cross multiply
    11,791.26x = 17,693.10 × 5,221.98
  4. Step 4: Simplify right side
    11,791.26x = 92,393,014.34
  5. Step 5: Solve for x
    x = 92,393,014.34/11,791.26
  6. Step 6: Final answer
    x = 7,835.72

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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.