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Finding the Fourth Proportional to 619,286.32, 854,796.60 and 404,459.80

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Solution

The fourth proportional to 619,286.32, 854,796.60 and 404,459.80 is: 558,273.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,286.32 : 854,796.60 = 404,459.80 : x
  2. Step 2: Convert to fraction form
    619,286.32/854,796.60 = 404,459.80/x
  3. Step 3: Cross multiply
    619,286.32x = 854,796.60 × 404,459.80
  4. Step 4: Simplify right side
    619,286.32x = 345,730,861,876.68
  5. Step 5: Solve for x
    x = 345,730,861,876.68/619,286.32
  6. Step 6: Final answer
    x = 558,273.05

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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.