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Finding the Fourth Proportional to 2,613.44, 3,936.56 and 2,211.68

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Solution

The fourth proportional to 2,613.44, 3,936.56 and 2,211.68 is: 3,331.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,613.44 : 3,936.56 = 2,211.68 : x
  2. Step 2: Convert to fraction form
    2,613.44/3,936.56 = 2,211.68/x
  3. Step 3: Cross multiply
    2,613.44x = 3,936.56 × 2,211.68
  4. Step 4: Simplify right side
    2,613.44x = 8,706,411.02
  5. Step 5: Solve for x
    x = 8,706,411.02/2,613.44
  6. Step 6: Final answer
    x = 3,331.40

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These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.