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Finding the Fourth Proportional to 17,342.44, 23,929.86 and 9,889

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Solution

The fourth proportional to 17,342.44, 23,929.86 and 9,889 is: 13,645.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,342.44 : 23,929.86 = 9,889 : x
  2. Step 2: Convert to fraction form
    17,342.44/23,929.86 = 9,889/x
  3. Step 3: Cross multiply
    17,342.44x = 23,929.86 × 9,889
  4. Step 4: Simplify right side
    17,342.44x = 236,642,385.54
  5. Step 5: Solve for x
    x = 236,642,385.54/17,342.44
  6. Step 6: Final answer
    x = 13,645.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.