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Finding the Fourth Proportional to 74,164.48, 111,245.87 and 18,005.22

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Solution

The fourth proportional to 74,164.48, 111,245.87 and 18,005.22 is: 27,007.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,164.48 : 111,245.87 = 18,005.22 : x
  2. Step 2: Convert to fraction form
    74,164.48/111,245.87 = 18,005.22/x
  3. Step 3: Cross multiply
    74,164.48x = 111,245.87 × 18,005.22
  4. Step 4: Simplify right side
    74,164.48x = 2,003,006,408.45
  5. Step 5: Solve for x
    x = 2,003,006,408.45/74,164.48
  6. Step 6: Final answer
    x = 27,007.63

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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.