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Finding the Fourth Proportional to 83,679.69, 125,481.25 and 49,961.01

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Solution

The fourth proportional to 83,679.69, 125,481.25 and 49,961.01 is: 74,918.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,679.69 : 125,481.25 = 49,961.01 : x
  2. Step 2: Convert to fraction form
    83,679.69/125,481.25 = 49,961.01/x
  3. Step 3: Cross multiply
    83,679.69x = 125,481.25 × 49,961.01
  4. Step 4: Simplify right side
    83,679.69x = 6,269,169,986.06
  5. Step 5: Solve for x
    x = 6,269,169,986.06/83,679.69
  6. Step 6: Final answer
    x = 74,918.66

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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.