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Finding the Fourth Proportional to 11,163.88, 16,745.82 and 4,243.24

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Solution

The fourth proportional to 11,163.88, 16,745.82 and 4,243.24 is: 6,364.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,163.88 : 16,745.82 = 4,243.24 : x
  2. Step 2: Convert to fraction form
    11,163.88/16,745.82 = 4,243.24/x
  3. Step 3: Cross multiply
    11,163.88x = 16,745.82 × 4,243.24
  4. Step 4: Simplify right side
    11,163.88x = 71,056,533.26
  5. Step 5: Solve for x
    x = 71,056,533.26/11,163.88
  6. Step 6: Final answer
    x = 6,364.86

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Double scale
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Similar ratio
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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.