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Finding the Fourth Proportional to 263,514.40, 394,688.40 and 216,858.40

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Solution

The fourth proportional to 263,514.40, 394,688.40 and 216,858.40 is: 324,807.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,514.40 : 394,688.40 = 216,858.40 : x
  2. Step 2: Convert to fraction form
    263,514.40/394,688.40 = 216,858.40/x
  3. Step 3: Cross multiply
    263,514.40x = 394,688.40 × 216,858.40
  4. Step 4: Simplify right side
    263,514.40x = 85,591,494,922.56
  5. Step 5: Solve for x
    x = 85,591,494,922.56/263,514.40
  6. Step 6: Final answer
    x = 324,807.66

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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.