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Finding the Fourth Proportional to 61,717.63, 85,169.64 and 36,219.44

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Solution

The fourth proportional to 61,717.63, 85,169.64 and 36,219.44 is: 49,982.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,717.63 : 85,169.64 = 36,219.44 : x
  2. Step 2: Convert to fraction form
    61,717.63/85,169.64 = 36,219.44/x
  3. Step 3: Cross multiply
    61,717.63x = 85,169.64 × 36,219.44
  4. Step 4: Simplify right side
    61,717.63x = 3,084,796,665.80
  5. Step 5: Solve for x
    x = 3,084,796,665.80/61,717.63
  6. Step 6: Final answer
    x = 49,982.42

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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.