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Finding the Fourth Proportional to 39,243.20, 58,843.20 and 17,052.80

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Solution

The fourth proportional to 39,243.20, 58,843.20 and 17,052.80 is: 25,569.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,243.20 : 58,843.20 = 17,052.80 : x
  2. Step 2: Convert to fraction form
    39,243.20/58,843.20 = 17,052.80/x
  3. Step 3: Cross multiply
    39,243.20x = 58,843.20 × 17,052.80
  4. Step 4: Simplify right side
    39,243.20x = 1,003,441,320.96
  5. Step 5: Solve for x
    x = 1,003,441,320.96/39,243.20
  6. Step 6: Final answer
    x = 25,569.81

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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.