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Finding the Fourth Proportional to 406,380.41, 561,078.99 and 253,651.26

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Solution

The fourth proportional to 406,380.41, 561,078.99 and 253,651.26 is: 350,209.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,380.41 : 561,078.99 = 253,651.26 : x
  2. Step 2: Convert to fraction form
    406,380.41/561,078.99 = 253,651.26/x
  3. Step 3: Cross multiply
    406,380.41x = 561,078.99 × 253,651.26
  4. Step 4: Simplify right side
    406,380.41x = 142,318,392,773.03
  5. Step 5: Solve for x
    x = 142,318,392,773.03/406,380.41
  6. Step 6: Final answer
    x = 350,209.78

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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.