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Finding the Fourth Proportional to 62,908.50, 86,811.26 and 36,031.88

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Solution

The fourth proportional to 62,908.50, 86,811.26 and 36,031.88 is: 49,722.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,908.50 : 86,811.26 = 36,031.88 : x
  2. Step 2: Convert to fraction form
    62,908.50/86,811.26 = 36,031.88/x
  3. Step 3: Cross multiply
    62,908.50x = 86,811.26 × 36,031.88
  4. Step 4: Simplify right side
    62,908.50x = 3,127,972,902.97
  5. Step 5: Solve for x
    x = 3,127,972,902.97/62,908.50
  6. Step 6: Final answer
    x = 49,722.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.