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Finding the Fourth Proportional to 3,684.76, 5,084.88 and 2,112.75

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Solution

The fourth proportional to 3,684.76, 5,084.88 and 2,112.75 is: 2,915.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,684.76 : 5,084.88 = 2,112.75 : x
  2. Step 2: Convert to fraction form
    3,684.76/5,084.88 = 2,112.75/x
  3. Step 3: Cross multiply
    3,684.76x = 5,084.88 × 2,112.75
  4. Step 4: Simplify right side
    3,684.76x = 10,743,072.30
  5. Step 5: Solve for x
    x = 10,743,072.30/3,684.76
  6. Step 6: Final answer
    x = 2,915.54

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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.