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Finding the Fourth Proportional to 3,540.72, 4,885.86 and 1,968.96

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Solution

The fourth proportional to 3,540.72, 4,885.86 and 1,968.96 is: 2,716.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,540.72 : 4,885.86 = 1,968.96 : x
  2. Step 2: Convert to fraction form
    3,540.72/4,885.86 = 1,968.96/x
  3. Step 3: Cross multiply
    3,540.72x = 4,885.86 × 1,968.96
  4. Step 4: Simplify right side
    3,540.72x = 9,620,062.91
  5. Step 5: Solve for x
    x = 9,620,062.91/3,540.72
  6. Step 6: Final answer
    x = 2,716.98

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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.