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Finding the Fourth Proportional to 11,118, 16,677.12 and 3,326.88

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Solution

The fourth proportional to 11,118, 16,677.12 and 3,326.88 is: 4,990.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,118 : 16,677.12 = 3,326.88 : x
  2. Step 2: Convert to fraction form
    11,118/16,677.12 = 3,326.88/x
  3. Step 3: Cross multiply
    11,118x = 16,677.12 × 3,326.88
  4. Step 4: Simplify right side
    11,118x = 55,482,776.99
  5. Step 5: Solve for x
    x = 55,482,776.99/11,118
  6. Step 6: Final answer
    x = 4,990.36

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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.