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Finding the Fourth Proportional to 11,760.44, 17,640.66 and 5,603

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Solution

The fourth proportional to 11,760.44, 17,640.66 and 5,603 is: 8,404.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,760.44 : 17,640.66 = 5,603 : x
  2. Step 2: Convert to fraction form
    11,760.44/17,640.66 = 5,603/x
  3. Step 3: Cross multiply
    11,760.44x = 17,640.66 × 5,603
  4. Step 4: Simplify right side
    11,760.44x = 98,840,617.98
  5. Step 5: Solve for x
    x = 98,840,617.98/11,760.44
  6. Step 6: Final answer
    x = 8,404.50

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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.