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Finding the Fourth Proportional to 140,959.47, 194,335.88 and 111,983.97

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Solution

The fourth proportional to 140,959.47, 194,335.88 and 111,983.97 is: 154,388.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,959.47 : 194,335.88 = 111,983.97 : x
  2. Step 2: Convert to fraction form
    140,959.47/194,335.88 = 111,983.97/x
  3. Step 3: Cross multiply
    140,959.47x = 194,335.88 × 111,983.97
  4. Step 4: Simplify right side
    140,959.47x = 21,762,502,431.54
  5. Step 5: Solve for x
    x = 21,762,502,431.54/140,959.47
  6. Step 6: Final answer
    x = 154,388.37

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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.