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Finding the Fourth Proportional to 683,221.32, 942,773.82 and 396,685.44

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Solution

The fourth proportional to 683,221.32, 942,773.82 and 396,685.44 is: 547,384.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,221.32 : 942,773.82 = 396,685.44 : x
  2. Step 2: Convert to fraction form
    683,221.32/942,773.82 = 396,685.44/x
  3. Step 3: Cross multiply
    683,221.32x = 942,773.82 × 396,685.44
  4. Step 4: Simplify right side
    683,221.32x = 373,984,647,607.18
  5. Step 5: Solve for x
    x = 373,984,647,607.18/683,221.32
  6. Step 6: Final answer
    x = 547,384.33

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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.