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Finding the Fourth Proportional to 74,160.44, 111,239.70 and 18,001

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Solution

The fourth proportional to 74,160.44, 111,239.70 and 18,001 is: 27,001.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,160.44 : 111,239.70 = 18,001 : x
  2. Step 2: Convert to fraction form
    74,160.44/111,239.70 = 18,001/x
  3. Step 3: Cross multiply
    74,160.44x = 111,239.70 × 18,001
  4. Step 4: Simplify right side
    74,160.44x = 2,002,425,839.70
  5. Step 5: Solve for x
    x = 2,002,425,839.70/74,160.44
  6. Step 6: Final answer
    x = 27,001.27

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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.