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Finding the Fourth Proportional to 664,910.20, 997,365.30 and 613,588.60

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Solution

The fourth proportional to 664,910.20, 997,365.30 and 613,588.60 is: 920,382.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,910.20 : 997,365.30 = 613,588.60 : x
  2. Step 2: Convert to fraction form
    664,910.20/997,365.30 = 613,588.60/x
  3. Step 3: Cross multiply
    664,910.20x = 997,365.30 × 613,588.60
  4. Step 4: Simplify right side
    664,910.20x = 611,971,978,115.58
  5. Step 5: Solve for x
    x = 611,971,978,115.58/664,910.20
  6. Step 6: Final answer
    x = 920,382.90

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Similar ratio
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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.