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Finding the Fourth Proportional to 617,410.20, 925,596.90 and 321,922.20

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Solution

The fourth proportional to 617,410.20, 925,596.90 and 321,922.20 is: 482,613.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,410.20 : 925,596.90 = 321,922.20 : x
  2. Step 2: Convert to fraction form
    617,410.20/925,596.90 = 321,922.20/x
  3. Step 3: Cross multiply
    617,410.20x = 925,596.90 × 321,922.20
  4. Step 4: Simplify right side
    617,410.20x = 297,970,190,361.18
  5. Step 5: Solve for x
    x = 297,970,190,361.18/617,410.20
  6. Step 6: Final answer
    x = 482,613.00

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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.