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Finding the Fourth Proportional to 68,824.62, 103,231.26 and 48,751.20

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Solution

The fourth proportional to 68,824.62, 103,231.26 and 48,751.20 is: 73,122.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,824.62 : 103,231.26 = 48,751.20 : x
  2. Step 2: Convert to fraction form
    68,824.62/103,231.26 = 48,751.20/x
  3. Step 3: Cross multiply
    68,824.62x = 103,231.26 × 48,751.20
  4. Step 4: Simplify right side
    68,824.62x = 5,032,647,802.51
  5. Step 5: Solve for x
    x = 5,032,647,802.51/68,824.62
  6. Step 6: Final answer
    x = 73,122.78

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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.