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Finding the Fourth Proportional to 71,908.66, 107,911.59 and 25,161.94

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Solution

The fourth proportional to 71,908.66, 107,911.59 and 25,161.94 is: 37,759.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,908.66 : 107,911.59 = 25,161.94 : x
  2. Step 2: Convert to fraction form
    71,908.66/107,911.59 = 25,161.94/x
  3. Step 3: Cross multiply
    71,908.66x = 107,911.59 × 25,161.94
  4. Step 4: Simplify right side
    71,908.66x = 2,715,264,952.88
  5. Step 5: Solve for x
    x = 2,715,264,952.88/71,908.66
  6. Step 6: Final answer
    x = 37,759.92

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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.