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Finding the Fourth Proportional to 11,800.98, 16,295.85 and 8,811.68

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Solution

The fourth proportional to 11,800.98, 16,295.85 and 8,811.68 is: 12,167.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,800.98 : 16,295.85 = 8,811.68 : x
  2. Step 2: Convert to fraction form
    11,800.98/16,295.85 = 8,811.68/x
  3. Step 3: Cross multiply
    11,800.98x = 16,295.85 × 8,811.68
  4. Step 4: Simplify right side
    11,800.98x = 143,593,734.05
  5. Step 5: Solve for x
    x = 143,593,734.05/11,800.98
  6. Step 6: Final answer
    x = 12,167.95

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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.