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Finding the Fourth Proportional to 12,163.36, 16,765.74 and 8,806.36

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Solution

The fourth proportional to 12,163.36, 16,765.74 and 8,806.36 is: 12,138.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,163.36 : 16,765.74 = 8,806.36 : x
  2. Step 2: Convert to fraction form
    12,163.36/16,765.74 = 8,806.36/x
  3. Step 3: Cross multiply
    12,163.36x = 16,765.74 × 8,806.36
  4. Step 4: Simplify right side
    12,163.36x = 147,645,142.11
  5. Step 5: Solve for x
    x = 147,645,142.11/12,163.36
  6. Step 6: Final answer
    x = 12,138.52

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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.