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Finding the Fourth Proportional to 605,872.80, 908,809.20 and 394,365.60

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Solution

The fourth proportional to 605,872.80, 908,809.20 and 394,365.60 is: 591,548.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,872.80 : 908,809.20 = 394,365.60 : x
  2. Step 2: Convert to fraction form
    605,872.80/908,809.20 = 394,365.60/x
  3. Step 3: Cross multiply
    605,872.80x = 908,809.20 × 394,365.60
  4. Step 4: Simplify right side
    605,872.80x = 358,403,085,443.52
  5. Step 5: Solve for x
    x = 358,403,085,443.52/605,872.80
  6. Step 6: Final answer
    x = 591,548.40

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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.