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Finding the Fourth Proportional to 39,863.20, 59,794.80 and 38,048.80

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Solution

The fourth proportional to 39,863.20, 59,794.80 and 38,048.80 is: 57,073.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,863.20 : 59,794.80 = 38,048.80 : x
  2. Step 2: Convert to fraction form
    39,863.20/59,794.80 = 38,048.80/x
  3. Step 3: Cross multiply
    39,863.20x = 59,794.80 × 38,048.80
  4. Step 4: Simplify right side
    39,863.20x = 2,275,120,386.24
  5. Step 5: Solve for x
    x = 2,275,120,386.24/39,863.20
  6. Step 6: Final answer
    x = 57,073.20

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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.