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Finding the Fourth Proportional to 106,451.44, 146,905.11 and 68,791.30

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Solution

The fourth proportional to 106,451.44, 146,905.11 and 68,791.30 is: 94,933.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,451.44 : 146,905.11 = 68,791.30 : x
  2. Step 2: Convert to fraction form
    106,451.44/146,905.11 = 68,791.30/x
  3. Step 3: Cross multiply
    106,451.44x = 146,905.11 × 68,791.30
  4. Step 4: Simplify right side
    106,451.44x = 10,105,793,126.28
  5. Step 5: Solve for x
    x = 10,105,793,126.28/106,451.44
  6. Step 6: Final answer
    x = 94,933.36

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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.