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Finding the Fourth Proportional to 306,521.38, 422,936.11 and 179,172.34

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Solution

The fourth proportional to 306,521.38, 422,936.11 and 179,172.34 is: 247,220.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,521.38 : 422,936.11 = 179,172.34 : x
  2. Step 2: Convert to fraction form
    306,521.38/422,936.11 = 179,172.34/x
  3. Step 3: Cross multiply
    306,521.38x = 422,936.11 × 179,172.34
  4. Step 4: Simplify right side
    306,521.38x = 75,778,452,499.20
  5. Step 5: Solve for x
    x = 75,778,452,499.20/306,521.38
  6. Step 6: Final answer
    x = 247,220.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.