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Finding the Fourth Proportional to 11,620.55, 17,428.99 and 5,044.97

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Solution

The fourth proportional to 11,620.55, 17,428.99 and 5,044.97 is: 7,566.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,620.55 : 17,428.99 = 5,044.97 : x
  2. Step 2: Convert to fraction form
    11,620.55/17,428.99 = 5,044.97/x
  3. Step 3: Cross multiply
    11,620.55x = 17,428.99 × 5,044.97
  4. Step 4: Simplify right side
    11,620.55x = 87,928,731.68
  5. Step 5: Solve for x
    x = 87,928,731.68/11,620.55
  6. Step 6: Final answer
    x = 7,566.66

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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.