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Finding the Fourth Proportional to 39,863.80, 59,721.90 and 23,231.80

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Solution

The fourth proportional to 39,863.80, 59,721.90 and 23,231.80 is: 34,804.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,863.80 : 59,721.90 = 23,231.80 : x
  2. Step 2: Convert to fraction form
    39,863.80/59,721.90 = 23,231.80/x
  3. Step 3: Cross multiply
    39,863.80x = 59,721.90 × 23,231.80
  4. Step 4: Simplify right side
    39,863.80x = 1,387,447,236.42
  5. Step 5: Solve for x
    x = 1,387,447,236.42/39,863.80
  6. Step 6: Final answer
    x = 34,804.69

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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.