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Finding the Fourth Proportional to 86,644.80, 119,519.94 and 52,165.56

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Solution

The fourth proportional to 86,644.80, 119,519.94 and 52,165.56 is: 71,958.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,644.80 : 119,519.94 = 52,165.56 : x
  2. Step 2: Convert to fraction form
    86,644.80/119,519.94 = 52,165.56/x
  3. Step 3: Cross multiply
    86,644.80x = 119,519.94 × 52,165.56
  4. Step 4: Simplify right side
    86,644.80x = 6,234,824,340.44
  5. Step 5: Solve for x
    x = 6,234,824,340.44/86,644.80
  6. Step 6: Final answer
    x = 71,958.44

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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.