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Finding the Fourth Proportional to 619,238.44, 853,685.22 and 415,325.80

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Solution

The fourth proportional to 619,238.44, 853,685.22 and 415,325.80 is: 572,570.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,238.44 : 853,685.22 = 415,325.80 : x
  2. Step 2: Convert to fraction form
    619,238.44/853,685.22 = 415,325.80/x
  3. Step 3: Cross multiply
    619,238.44x = 853,685.22 × 415,325.80
  4. Step 4: Simplify right side
    619,238.44x = 354,557,496,944.68
  5. Step 5: Solve for x
    x = 354,557,496,944.68/619,238.44
  6. Step 6: Final answer
    x = 572,570.23

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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.