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Finding the Fourth Proportional to 7,411.92, 11,115.99 and 3,028.56

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Solution

The fourth proportional to 7,411.92, 11,115.99 and 3,028.56 is: 4,542.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,411.92 : 11,115.99 = 3,028.56 : x
  2. Step 2: Convert to fraction form
    7,411.92/11,115.99 = 3,028.56/x
  3. Step 3: Cross multiply
    7,411.92x = 11,115.99 × 3,028.56
  4. Step 4: Simplify right side
    7,411.92x = 33,665,442.67
  5. Step 5: Solve for x
    x = 33,665,442.67/7,411.92
  6. Step 6: Final answer
    x = 4,542.07

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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.