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Finding the Fourth Proportional to 71,910.78, 107,914.77 and 25,164.06

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Solution

The fourth proportional to 71,910.78, 107,914.77 and 25,164.06 is: 37,763.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,910.78 : 107,914.77 = 25,164.06 : x
  2. Step 2: Convert to fraction form
    71,910.78/107,914.77 = 25,164.06/x
  3. Step 3: Cross multiply
    71,910.78x = 107,914.77 × 25,164.06
  4. Step 4: Simplify right side
    71,910.78x = 2,715,573,747.17
  5. Step 5: Solve for x
    x = 2,715,573,747.17/71,910.78
  6. Step 6: Final answer
    x = 37,763.10

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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.