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Finding the Fourth Proportional to 2,685.87, 4,021.16 and 2,355.03

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Solution

The fourth proportional to 2,685.87, 4,021.16 and 2,355.03 is: 3,525.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685.87 : 4,021.16 = 2,355.03 : x
  2. Step 2: Convert to fraction form
    2,685.87/4,021.16 = 2,355.03/x
  3. Step 3: Cross multiply
    2,685.87x = 4,021.16 × 2,355.03
  4. Step 4: Simplify right side
    2,685.87x = 9,469,940.66
  5. Step 5: Solve for x
    x = 9,469,940.66/2,685.87
  6. Step 6: Final answer
    x = 3,525.84

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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.