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Finding the Fourth Proportional to 719,453.91, 992,847.87 and 397,164.42

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Solution

The fourth proportional to 719,453.91, 992,847.87 and 397,164.42 is: 548,087.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,453.91 : 992,847.87 = 397,164.42 : x
  2. Step 2: Convert to fraction form
    719,453.91/992,847.87 = 397,164.42/x
  3. Step 3: Cross multiply
    719,453.91x = 992,847.87 × 397,164.42
  4. Step 4: Simplify right side
    719,453.91x = 394,323,848,436.79
  5. Step 5: Solve for x
    x = 394,323,848,436.79/719,453.91
  6. Step 6: Final answer
    x = 548,087.71

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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.