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Finding the Fourth Proportional to 664,673.40, 997,010.10 and 620,058.60

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Solution

The fourth proportional to 664,673.40, 997,010.10 and 620,058.60 is: 930,087.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,673.40 : 997,010.10 = 620,058.60 : x
  2. Step 2: Convert to fraction form
    664,673.40/997,010.10 = 620,058.60/x
  3. Step 3: Cross multiply
    664,673.40x = 997,010.10 × 620,058.60
  4. Step 4: Simplify right side
    664,673.40x = 618,204,686,791.86
  5. Step 5: Solve for x
    x = 618,204,686,791.86/664,673.40
  6. Step 6: Final answer
    x = 930,087.90

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Double scale
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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.