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Finding the Fourth Proportional to 394,516.12, 544,404.90 and 222,440.20

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Solution

The fourth proportional to 394,516.12, 544,404.90 and 222,440.20 is: 306,952.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,516.12 : 544,404.90 = 222,440.20 : x
  2. Step 2: Convert to fraction form
    394,516.12/544,404.90 = 222,440.20/x
  3. Step 3: Cross multiply
    394,516.12x = 544,404.90 × 222,440.20
  4. Step 4: Simplify right side
    394,516.12x = 121,097,534,836.98
  5. Step 5: Solve for x
    x = 121,097,534,836.98/394,516.12
  6. Step 6: Final answer
    x = 306,952.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.