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Finding the Fourth Proportional to 61,990.82, 85,517.26 and 36,822.50

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Solution

The fourth proportional to 61,990.82, 85,517.26 and 36,822.50 is: 50,797.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,990.82 : 85,517.26 = 36,822.50 : x
  2. Step 2: Convert to fraction form
    61,990.82/85,517.26 = 36,822.50/x
  3. Step 3: Cross multiply
    61,990.82x = 85,517.26 × 36,822.50
  4. Step 4: Simplify right side
    61,990.82x = 3,148,958,786.71
  5. Step 5: Solve for x
    x = 3,148,958,786.71/61,990.82
  6. Step 6: Final answer
    x = 50,797.18

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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.