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Finding the Fourth Proportional to 7,112.46, 10,665.68 and 2,181

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Solution

The fourth proportional to 7,112.46, 10,665.68 and 2,181 is: 3,270.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,112.46 : 10,665.68 = 2,181 : x
  2. Step 2: Convert to fraction form
    7,112.46/10,665.68 = 2,181/x
  3. Step 3: Cross multiply
    7,112.46x = 10,665.68 × 2,181
  4. Step 4: Simplify right side
    7,112.46x = 23,261,837.18
  5. Step 5: Solve for x
    x = 23,261,837.18/7,112.46
  6. Step 6: Final answer
    x = 3,270.58

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.