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Finding the Fourth Proportional to 62,825.69, 86,703.54 and 38,968.22

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Solution

The fourth proportional to 62,825.69, 86,703.54 and 38,968.22 is: 53,778.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,825.69 : 86,703.54 = 38,968.22 : x
  2. Step 2: Convert to fraction form
    62,825.69/86,703.54 = 38,968.22/x
  3. Step 3: Cross multiply
    62,825.69x = 86,703.54 × 38,968.22
  4. Step 4: Simplify right side
    62,825.69x = 3,378,682,621.50
  5. Step 5: Solve for x
    x = 3,378,682,621.50/62,825.69
  6. Step 6: Final answer
    x = 53,778.68

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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.