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Finding the Fourth Proportional to 3,338.34, 5,005.08 and 2,760

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Solution

The fourth proportional to 3,338.34, 5,005.08 and 2,760 is: 4,137.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,338.34 : 5,005.08 = 2,760 : x
  2. Step 2: Convert to fraction form
    3,338.34/5,005.08 = 2,760/x
  3. Step 3: Cross multiply
    3,338.34x = 5,005.08 × 2,760
  4. Step 4: Simplify right side
    3,338.34x = 13,814,020.80
  5. Step 5: Solve for x
    x = 13,814,020.80/3,338.34
  6. Step 6: Final answer
    x = 4,137.99

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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.