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Finding the Fourth Proportional to 71,991.66, 108,020.31 and 36,955.94

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Solution

The fourth proportional to 71,991.66, 108,020.31 and 36,955.94 is: 55,450.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,991.66 : 108,020.31 = 36,955.94 : x
  2. Step 2: Convert to fraction form
    71,991.66/108,020.31 = 36,955.94/x
  3. Step 3: Cross multiply
    71,991.66x = 108,020.31 × 36,955.94
  4. Step 4: Simplify right side
    71,991.66x = 3,991,992,095.14
  5. Step 5: Solve for x
    x = 3,991,992,095.14/71,991.66
  6. Step 6: Final answer
    x = 55,450.76

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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.