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Finding the Fourth Proportional to 2,481.02, 3,720.99 and 942.02

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Solution

The fourth proportional to 2,481.02, 3,720.99 and 942.02 is: 1,412.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,481.02 : 3,720.99 = 942.02 : x
  2. Step 2: Convert to fraction form
    2,481.02/3,720.99 = 942.02/x
  3. Step 3: Cross multiply
    2,481.02x = 3,720.99 × 942.02
  4. Step 4: Simplify right side
    2,481.02x = 3,505,247.00
  5. Step 5: Solve for x
    x = 3,505,247.00/2,481.02
  6. Step 6: Final answer
    x = 1,412.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.