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Finding the Fourth Proportional to 419,324.60, 628,986.90 and 366,836.60

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Solution

The fourth proportional to 419,324.60, 628,986.90 and 366,836.60 is: 550,254.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,324.60 : 628,986.90 = 366,836.60 : x
  2. Step 2: Convert to fraction form
    419,324.60/628,986.90 = 366,836.60/x
  3. Step 3: Cross multiply
    419,324.60x = 628,986.90 × 366,836.60
  4. Step 4: Simplify right side
    419,324.60x = 230,735,415,840.54
  5. Step 5: Solve for x
    x = 230,735,415,840.54/419,324.60
  6. Step 6: Final answer
    x = 550,254.90

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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.