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Finding the Fourth Proportional to 11,791.50, 16,272.28 and 6,823.50

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Solution

The fourth proportional to 11,791.50, 16,272.28 and 6,823.50 is: 9,416.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,791.50 : 16,272.28 = 6,823.50 : x
  2. Step 2: Convert to fraction form
    11,791.50/16,272.28 = 6,823.50/x
  3. Step 3: Cross multiply
    11,791.50x = 16,272.28 × 6,823.50
  4. Step 4: Simplify right side
    11,791.50x = 111,033,902.58
  5. Step 5: Solve for x
    x = 111,033,902.58/11,791.50
  6. Step 6: Final answer
    x = 9,416.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.