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Finding the Fourth Proportional to 12,200.12, 16,836.18 and 6,611.12

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Solution

The fourth proportional to 12,200.12, 16,836.18 and 6,611.12 is: 9,123.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,200.12 : 16,836.18 = 6,611.12 : x
  2. Step 2: Convert to fraction form
    12,200.12/16,836.18 = 6,611.12/x
  3. Step 3: Cross multiply
    12,200.12x = 16,836.18 × 6,611.12
  4. Step 4: Simplify right side
    12,200.12x = 111,306,006.32
  5. Step 5: Solve for x
    x = 111,306,006.32/12,200.12
  6. Step 6: Final answer
    x = 9,123.35

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.