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Finding the Fourth Proportional to 71,989.66, 108,017.31 and 36,953.94

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Solution

The fourth proportional to 71,989.66, 108,017.31 and 36,953.94 is: 55,447.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,989.66 : 108,017.31 = 36,953.94 : x
  2. Step 2: Convert to fraction form
    71,989.66/108,017.31 = 36,953.94/x
  3. Step 3: Cross multiply
    71,989.66x = 108,017.31 × 36,953.94
  4. Step 4: Simplify right side
    71,989.66x = 3,991,665,192.70
  5. Step 5: Solve for x
    x = 3,991,665,192.70/71,989.66
  6. Step 6: Final answer
    x = 55,447.76

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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.