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Finding the Fourth Proportional to 39,673, 54,748.74 and 22,009

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Solution

The fourth proportional to 39,673, 54,748.74 and 22,009 is: 30,372.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,673 : 54,748.74 = 22,009 : x
  2. Step 2: Convert to fraction form
    39,673/54,748.74 = 22,009/x
  3. Step 3: Cross multiply
    39,673x = 54,748.74 × 22,009
  4. Step 4: Simplify right side
    39,673x = 1,204,965,018.66
  5. Step 5: Solve for x
    x = 1,204,965,018.66/39,673
  6. Step 6: Final answer
    x = 30,372.42

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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.