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Finding the Fourth Proportional to 17,879.49, 26,815.56 and 7,339.23

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Solution

The fourth proportional to 17,879.49, 26,815.56 and 7,339.23 is: 11,007.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,879.49 : 26,815.56 = 7,339.23 : x
  2. Step 2: Convert to fraction form
    17,879.49/26,815.56 = 7,339.23/x
  3. Step 3: Cross multiply
    17,879.49x = 26,815.56 × 7,339.23
  4. Step 4: Simplify right side
    17,879.49x = 196,805,562.42
  5. Step 5: Solve for x
    x = 196,805,562.42/17,879.49
  6. Step 6: Final answer
    x = 11,007.34

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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.