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Finding the Fourth Proportional to 68,120.33, 93,990.78 and 41,262.35

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Solution

The fourth proportional to 68,120.33, 93,990.78 and 41,262.35 is: 56,932.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,120.33 : 93,990.78 = 41,262.35 : x
  2. Step 2: Convert to fraction form
    68,120.33/93,990.78 = 41,262.35/x
  3. Step 3: Cross multiply
    68,120.33x = 93,990.78 × 41,262.35
  4. Step 4: Simplify right side
    68,120.33x = 3,878,279,991.18
  5. Step 5: Solve for x
    x = 3,878,279,991.18/68,120.33
  6. Step 6: Final answer
    x = 56,932.79

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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.