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Finding the Fourth Proportional to 7,591.50, 11,388.46 and 3,209

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Solution

The fourth proportional to 7,591.50, 11,388.46 and 3,209 is: 4,814.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,591.50 : 11,388.46 = 3,209 : x
  2. Step 2: Convert to fraction form
    7,591.50/11,388.46 = 3,209/x
  3. Step 3: Cross multiply
    7,591.50x = 11,388.46 × 3,209
  4. Step 4: Simplify right side
    7,591.50x = 36,545,568.14
  5. Step 5: Solve for x
    x = 36,545,568.14/7,591.50
  6. Step 6: Final answer
    x = 4,814.01

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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.