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Finding the Fourth Proportional to 4,936.64, 7,408.14 and 2,855.36

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Solution

The fourth proportional to 4,936.64, 7,408.14 and 2,855.36 is: 4,284.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,936.64 : 7,408.14 = 2,855.36 : x
  2. Step 2: Convert to fraction form
    4,936.64/7,408.14 = 2,855.36/x
  3. Step 3: Cross multiply
    4,936.64x = 7,408.14 × 2,855.36
  4. Step 4: Simplify right side
    4,936.64x = 21,152,906.63
  5. Step 5: Solve for x
    x = 21,152,906.63/4,936.64
  6. Step 6: Final answer
    x = 4,284.88

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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.