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Finding the Fourth Proportional to 205,996.80, 308,995.20 and 164,524.80

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Solution

The fourth proportional to 205,996.80, 308,995.20 and 164,524.80 is: 246,787.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,996.80 : 308,995.20 = 164,524.80 : x
  2. Step 2: Convert to fraction form
    205,996.80/308,995.20 = 164,524.80/x
  3. Step 3: Cross multiply
    205,996.80x = 308,995.20 × 164,524.80
  4. Step 4: Simplify right side
    205,996.80x = 50,837,373,480.96
  5. Step 5: Solve for x
    x = 50,837,373,480.96/205,996.80
  6. Step 6: Final answer
    x = 246,787.20

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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.