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Finding the Fourth Proportional to 84,786.69, 127,211.22 and 34,853.43

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Solution

The fourth proportional to 84,786.69, 127,211.22 and 34,853.43 is: 52,292.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,786.69 : 127,211.22 = 34,853.43 : x
  2. Step 2: Convert to fraction form
    84,786.69/127,211.22 = 34,853.43/x
  3. Step 3: Cross multiply
    84,786.69x = 127,211.22 × 34,853.43
  4. Step 4: Simplify right side
    84,786.69x = 4,433,747,351.48
  5. Step 5: Solve for x
    x = 4,433,747,351.48/84,786.69
  6. Step 6: Final answer
    x = 52,292.96

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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.