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Finding the Fourth Proportional to 7,309.75, 10,087.46 and 3,997.75

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Solution

The fourth proportional to 7,309.75, 10,087.46 and 3,997.75 is: 5,516.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,309.75 : 10,087.46 = 3,997.75 : x
  2. Step 2: Convert to fraction form
    7,309.75/10,087.46 = 3,997.75/x
  3. Step 3: Cross multiply
    7,309.75x = 10,087.46 × 3,997.75
  4. Step 4: Simplify right side
    7,309.75x = 40,327,143.22
  5. Step 5: Solve for x
    x = 40,327,143.22/7,309.75
  6. Step 6: Final answer
    x = 5,516.90

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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.