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Finding the Fourth Proportional to 2,349.36, 3,523.50 and 789.12

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Solution

The fourth proportional to 2,349.36, 3,523.50 and 789.12 is: 1,183.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,349.36 : 3,523.50 = 789.12 : x
  2. Step 2: Convert to fraction form
    2,349.36/3,523.50 = 789.12/x
  3. Step 3: Cross multiply
    2,349.36x = 3,523.50 × 789.12
  4. Step 4: Simplify right side
    2,349.36x = 2,780,464.32
  5. Step 5: Solve for x
    x = 2,780,464.32/2,349.36
  6. Step 6: Final answer
    x = 1,183.50

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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.