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Finding the Fourth Proportional to 119,780.94, 165,297.36 and 68,796.97

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Solution

The fourth proportional to 119,780.94, 165,297.36 and 68,796.97 is: 94,939.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,780.94 : 165,297.36 = 68,796.97 : x
  2. Step 2: Convert to fraction form
    119,780.94/165,297.36 = 68,796.97/x
  3. Step 3: Cross multiply
    119,780.94x = 165,297.36 × 68,796.97
  4. Step 4: Simplify right side
    119,780.94x = 11,371,957,517.00
  5. Step 5: Solve for x
    x = 11,371,957,517.00/119,780.94
  6. Step 6: Final answer
    x = 94,939.62

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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.