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Finding the Fourth Proportional to 413,728.80, 620,593.20 and 177,532.80

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Solution

The fourth proportional to 413,728.80, 620,593.20 and 177,532.80 is: 266,299.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,728.80 : 620,593.20 = 177,532.80 : x
  2. Step 2: Convert to fraction form
    413,728.80/620,593.20 = 177,532.80/x
  3. Step 3: Cross multiply
    413,728.80x = 620,593.20 × 177,532.80
  4. Step 4: Simplify right side
    413,728.80x = 110,175,648,456.96
  5. Step 5: Solve for x
    x = 110,175,648,456.96/413,728.80
  6. Step 6: Final answer
    x = 266,299.20

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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.