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Finding the Fourth Proportional to 4,978.68, 7,463.70 and 2,511.44

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Solution

The fourth proportional to 4,978.68, 7,463.70 and 2,511.44 is: 3,764.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,978.68 : 7,463.70 = 2,511.44 : x
  2. Step 2: Convert to fraction form
    4,978.68/7,463.70 = 2,511.44/x
  3. Step 3: Cross multiply
    4,978.68x = 7,463.70 × 2,511.44
  4. Step 4: Simplify right side
    4,978.68x = 18,744,634.73
  5. Step 5: Solve for x
    x = 18,744,634.73/4,978.68
  6. Step 6: Final answer
    x = 3,764.98

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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.