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Finding the Fourth Proportional to 179,809.72, 269,644.47 and 67,428.70

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Solution

The fourth proportional to 179,809.72, 269,644.47 and 67,428.70 is: 101,116.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,809.72 : 269,644.47 = 67,428.70 : x
  2. Step 2: Convert to fraction form
    179,809.72/269,644.47 = 67,428.70/x
  3. Step 3: Cross multiply
    179,809.72x = 269,644.47 × 67,428.70
  4. Step 4: Simplify right side
    179,809.72x = 18,181,776,074.29
  5. Step 5: Solve for x
    x = 18,181,776,074.29/179,809.72
  6. Step 6: Final answer
    x = 101,116.76

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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.