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Finding the Fourth Proportional to 52,991.70, 79,438.14 and 17,906.82

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Solution

The fourth proportional to 52,991.70, 79,438.14 and 17,906.82 is: 26,843.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,991.70 : 79,438.14 = 17,906.82 : x
  2. Step 2: Convert to fraction form
    52,991.70/79,438.14 = 17,906.82/x
  3. Step 3: Cross multiply
    52,991.70x = 79,438.14 × 17,906.82
  4. Step 4: Simplify right side
    52,991.70x = 1,422,484,474.11
  5. Step 5: Solve for x
    x = 1,422,484,474.11/52,991.70
  6. Step 6: Final answer
    x = 26,843.53

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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.