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Finding the Fourth Proportional to 11,808.66, 17,712.96 and 8,099.64

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Solution

The fourth proportional to 11,808.66, 17,712.96 and 8,099.64 is: 12,149.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,808.66 : 17,712.96 = 8,099.64 : x
  2. Step 2: Convert to fraction form
    11,808.66/17,712.96 = 8,099.64/x
  3. Step 3: Cross multiply
    11,808.66x = 17,712.96 × 8,099.64
  4. Step 4: Simplify right side
    11,808.66x = 143,468,599.33
  5. Step 5: Solve for x
    x = 143,468,599.33/11,808.66
  6. Step 6: Final answer
    x = 12,149.44

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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.