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Finding the Fourth Proportional to 9,591.75, 13,236.89 and 5,400

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Solution

The fourth proportional to 9,591.75, 13,236.89 and 5,400 is: 7,452.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,591.75 : 13,236.89 = 5,400 : x
  2. Step 2: Convert to fraction form
    9,591.75/13,236.89 = 5,400/x
  3. Step 3: Cross multiply
    9,591.75x = 13,236.89 × 5,400
  4. Step 4: Simplify right side
    9,591.75x = 71,479,179
  5. Step 5: Solve for x
    x = 71,479,179/9,591.75
  6. Step 6: Final answer
    x = 7,452.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.