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Finding the Fourth Proportional to 62,986.92, 86,920.44 and 36,127.80

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Solution

The fourth proportional to 62,986.92, 86,920.44 and 36,127.80 is: 49,855.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,986.92 : 86,920.44 = 36,127.80 : x
  2. Step 2: Convert to fraction form
    62,986.92/86,920.44 = 36,127.80/x
  3. Step 3: Cross multiply
    62,986.92x = 86,920.44 × 36,127.80
  4. Step 4: Simplify right side
    62,986.92x = 3,140,244,272.23
  5. Step 5: Solve for x
    x = 3,140,244,272.23/62,986.92
  6. Step 6: Final answer
    x = 49,855.50

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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.