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Finding the Fourth Proportional to 3,561.67, 5,342.49 and 964.60

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Solution

The fourth proportional to 3,561.67, 5,342.49 and 964.60 is: 1,446.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,561.67 : 5,342.49 = 964.60 : x
  2. Step 2: Convert to fraction form
    3,561.67/5,342.49 = 964.60/x
  3. Step 3: Cross multiply
    3,561.67x = 5,342.49 × 964.60
  4. Step 4: Simplify right side
    3,561.67x = 5,153,365.85
  5. Step 5: Solve for x
    x = 5,153,365.85/3,561.67
  6. Step 6: Final answer
    x = 1,446.90

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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.