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Finding the Fourth Proportional to 619,490.28, 929,124.57 and 394,181.44

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Solution

The fourth proportional to 619,490.28, 929,124.57 and 394,181.44 is: 591,201.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,490.28 : 929,124.57 = 394,181.44 : x
  2. Step 2: Convert to fraction form
    619,490.28/929,124.57 = 394,181.44/x
  3. Step 3: Cross multiply
    619,490.28x = 929,124.57 × 394,181.44
  4. Step 4: Simplify right side
    619,490.28x = 366,243,660,097.35
  5. Step 5: Solve for x
    x = 366,243,660,097.35/619,490.28
  6. Step 6: Final answer
    x = 591,201.63

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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.