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Finding the Fourth Proportional to 49,722, 68,600.82 and 28,208.16

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Solution

The fourth proportional to 49,722, 68,600.82 and 28,208.16 is: 38,918.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,722 : 68,600.82 = 28,208.16 : x
  2. Step 2: Convert to fraction form
    49,722/68,600.82 = 28,208.16/x
  3. Step 3: Cross multiply
    49,722x = 68,600.82 × 28,208.16
  4. Step 4: Simplify right side
    49,722x = 1,935,102,906.69
  5. Step 5: Solve for x
    x = 1,935,102,906.69/49,722
  6. Step 6: Final answer
    x = 38,918.44

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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.