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Finding the Fourth Proportional to 2,753.99, 4,131.48 and 905.63

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Solution

The fourth proportional to 2,753.99, 4,131.48 and 905.63 is: 1,358.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,753.99 : 4,131.48 = 905.63 : x
  2. Step 2: Convert to fraction form
    2,753.99/4,131.48 = 905.63/x
  3. Step 3: Cross multiply
    2,753.99x = 4,131.48 × 905.63
  4. Step 4: Simplify right side
    2,753.99x = 3,741,571.58
  5. Step 5: Solve for x
    x = 3,741,571.58/2,753.99
  6. Step 6: Final answer
    x = 1,358.60

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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.