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Finding the Fourth Proportional to 396,813.60, 595,220.40 and 366,400.80

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Solution

The fourth proportional to 396,813.60, 595,220.40 and 366,400.80 is: 549,601.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,813.60 : 595,220.40 = 366,400.80 : x
  2. Step 2: Convert to fraction form
    396,813.60/595,220.40 = 366,400.80/x
  3. Step 3: Cross multiply
    396,813.60x = 595,220.40 × 366,400.80
  4. Step 4: Simplify right side
    396,813.60x = 218,089,230,736.32
  5. Step 5: Solve for x
    x = 218,089,230,736.32/396,813.60
  6. Step 6: Final answer
    x = 549,601.20

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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.