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Finding the Fourth Proportional to 13,074.11, 18,043.83 and 7,768.95

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Solution

The fourth proportional to 13,074.11, 18,043.83 and 7,768.95 is: 10,722.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,074.11 : 18,043.83 = 7,768.95 : x
  2. Step 2: Convert to fraction form
    13,074.11/18,043.83 = 7,768.95/x
  3. Step 3: Cross multiply
    13,074.11x = 18,043.83 × 7,768.95
  4. Step 4: Simplify right side
    13,074.11x = 140,181,545.41
  5. Step 5: Solve for x
    x = 140,181,545.41/13,074.11
  6. Step 6: Final answer
    x = 10,722.07

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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.