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Finding the Fourth Proportional to 719,617.68, 993,046.68 and 397,321.20

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Solution

The fourth proportional to 719,617.68, 993,046.68 and 397,321.20 is: 548,289.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,617.68 : 993,046.68 = 397,321.20 : x
  2. Step 2: Convert to fraction form
    719,617.68/993,046.68 = 397,321.20/x
  3. Step 3: Cross multiply
    719,617.68x = 993,046.68 × 397,321.20
  4. Step 4: Simplify right side
    719,617.68x = 394,558,498,553.62
  5. Step 5: Solve for x
    x = 394,558,498,553.62/719,617.68
  6. Step 6: Final answer
    x = 548,289.06

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1.5x scale

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.