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Finding the Fourth Proportional to 13,568.96, 18,728.88 and 8,263.73

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Solution

The fourth proportional to 13,568.96, 18,728.88 and 8,263.73 is: 11,406.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,568.96 : 18,728.88 = 8,263.73 : x
  2. Step 2: Convert to fraction form
    13,568.96/18,728.88 = 8,263.73/x
  3. Step 3: Cross multiply
    13,568.96x = 18,728.88 × 8,263.73
  4. Step 4: Simplify right side
    13,568.96x = 154,770,407.52
  5. Step 5: Solve for x
    x = 154,770,407.52/13,568.96
  6. Step 6: Final answer
    x = 11,406.21

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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.