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Finding the Fourth Proportional to 538,882.40, 808,323.60 and 419,909.60

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Solution

The fourth proportional to 538,882.40, 808,323.60 and 419,909.60 is: 629,864.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,882.40 : 808,323.60 = 419,909.60 : x
  2. Step 2: Convert to fraction form
    538,882.40/808,323.60 = 419,909.60/x
  3. Step 3: Cross multiply
    538,882.40x = 808,323.60 × 419,909.60
  4. Step 4: Simplify right side
    538,882.40x = 339,422,839,546.56
  5. Step 5: Solve for x
    x = 339,422,839,546.56/538,882.40
  6. Step 6: Final answer
    x = 629,864.40

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1.5x scale

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.