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Finding the Fourth Proportional to 4,679.88, 7,016.36 and 2,211.82

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Solution

The fourth proportional to 4,679.88, 7,016.36 and 2,211.82 is: 3,316.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,679.88 : 7,016.36 = 2,211.82 : x
  2. Step 2: Convert to fraction form
    4,679.88/7,016.36 = 2,211.82/x
  3. Step 3: Cross multiply
    4,679.88x = 7,016.36 × 2,211.82
  4. Step 4: Simplify right side
    4,679.88x = 15,518,896.78
  5. Step 5: Solve for x
    x = 15,518,896.78/4,679.88
  6. Step 6: Final answer
    x = 3,316.09

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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.