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Finding the Fourth Proportional to 179,805.50, 269,721.21 and 68,997.50

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Solution

The fourth proportional to 179,805.50, 269,721.21 and 68,997.50 is: 103,501.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,805.50 : 269,721.21 = 68,997.50 : x
  2. Step 2: Convert to fraction form
    179,805.50/269,721.21 = 68,997.50/x
  3. Step 3: Cross multiply
    179,805.50x = 269,721.21 × 68,997.50
  4. Step 4: Simplify right side
    179,805.50x = 18,610,089,186.98
  5. Step 5: Solve for x
    x = 18,610,089,186.98/179,805.50
  6. Step 6: Final answer
    x = 103,501.22

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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.