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Finding the Fourth Proportional to 69,203.97, 103,720.30 and 49,181.53

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Solution

The fourth proportional to 69,203.97, 103,720.30 and 49,181.53 is: 73,711.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,203.97 : 103,720.30 = 49,181.53 : x
  2. Step 2: Convert to fraction form
    69,203.97/103,720.30 = 49,181.53/x
  3. Step 3: Cross multiply
    69,203.97x = 103,720.30 × 49,181.53
  4. Step 4: Simplify right side
    69,203.97x = 5,101,122,858.28
  5. Step 5: Solve for x
    x = 5,101,122,858.28/69,203.97
  6. Step 6: Final answer
    x = 73,711.42

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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.