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Finding the Fourth Proportional to 2,740.07, 4,108.80 and 791.75

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Solution

The fourth proportional to 2,740.07, 4,108.80 and 791.75 is: 1,187.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,740.07 : 4,108.80 = 791.75 : x
  2. Step 2: Convert to fraction form
    2,740.07/4,108.80 = 791.75/x
  3. Step 3: Cross multiply
    2,740.07x = 4,108.80 × 791.75
  4. Step 4: Simplify right side
    2,740.07x = 3,253,142.40
  5. Step 5: Solve for x
    x = 3,253,142.40/2,740.07
  6. Step 6: Final answer
    x = 1,187.25

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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.