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Finding the Fourth Proportional to 61,243.43, 84,509.41 and 34,388.87

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Solution

The fourth proportional to 61,243.43, 84,509.41 and 34,388.87 is: 47,452.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,243.43 : 84,509.41 = 34,388.87 : x
  2. Step 2: Convert to fraction form
    61,243.43/84,509.41 = 34,388.87/x
  3. Step 3: Cross multiply
    61,243.43x = 84,509.41 × 34,388.87
  4. Step 4: Simplify right side
    61,243.43x = 2,906,182,942.32
  5. Step 5: Solve for x
    x = 2,906,182,942.32/61,243.43
  6. Step 6: Final answer
    x = 47,452.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.