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Finding the Fourth Proportional to 719,626.60, 993,100.20 and 397,357.16

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Solution

The fourth proportional to 719,626.60, 993,100.20 and 397,357.16 is: 548,361.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,626.60 : 993,100.20 = 397,357.16 : x
  2. Step 2: Convert to fraction form
    719,626.60/993,100.20 = 397,357.16/x
  3. Step 3: Cross multiply
    719,626.60x = 993,100.20 × 397,357.16
  4. Step 4: Simplify right side
    719,626.60x = 394,615,475,067.43
  5. Step 5: Solve for x
    x = 394,615,475,067.43/719,626.60
  6. Step 6: Final answer
    x = 548,361.44

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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.