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Finding the Fourth Proportional to 179,409.54, 269,020.90 and 66,997.33

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Solution

The fourth proportional to 179,409.54, 269,020.90 and 66,997.33 is: 100,461.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,409.54 : 269,020.90 = 66,997.33 : x
  2. Step 2: Convert to fraction form
    179,409.54/269,020.90 = 66,997.33/x
  3. Step 3: Cross multiply
    179,409.54x = 269,020.90 × 66,997.33
  4. Step 4: Simplify right side
    179,409.54x = 18,023,682,014.20
  5. Step 5: Solve for x
    x = 18,023,682,014.20/179,409.54
  6. Step 6: Final answer
    x = 100,461.11

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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.