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Finding the Fourth Proportional to 127,959.90, 191,427.21 and 110,616.54

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Solution

The fourth proportional to 127,959.90, 191,427.21 and 110,616.54 is: 165,481.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,959.90 : 191,427.21 = 110,616.54 : x
  2. Step 2: Convert to fraction form
    127,959.90/191,427.21 = 110,616.54/x
  3. Step 3: Cross multiply
    127,959.90x = 191,427.21 × 110,616.54
  4. Step 4: Simplify right side
    127,959.90x = 21,175,015,632.05
  5. Step 5: Solve for x
    x = 21,175,015,632.05/127,959.90
  6. Step 6: Final answer
    x = 165,481.65

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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.