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Finding the Fourth Proportional to 91,129.41, 125,764.17 and 50,843.25

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Solution

The fourth proportional to 91,129.41, 125,764.17 and 50,843.25 is: 70,166.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,129.41 : 125,764.17 = 50,843.25 : x
  2. Step 2: Convert to fraction form
    91,129.41/125,764.17 = 50,843.25/x
  3. Step 3: Cross multiply
    91,129.41x = 125,764.17 × 50,843.25
  4. Step 4: Simplify right side
    91,129.41x = 6,394,259,136.35
  5. Step 5: Solve for x
    x = 6,394,259,136.35/91,129.41
  6. Step 6: Final answer
    x = 70,166.80

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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.