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Finding the Fourth Proportional to 694,872.86, 958,915.41 and 393,066.86

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Solution

The fourth proportional to 694,872.86, 958,915.41 and 393,066.86 is: 542,427.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,872.86 : 958,915.41 = 393,066.86 : x
  2. Step 2: Convert to fraction form
    694,872.86/958,915.41 = 393,066.86/x
  3. Step 3: Cross multiply
    694,872.86x = 958,915.41 × 393,066.86
  4. Step 4: Simplify right side
    694,872.86x = 376,917,869,214.31
  5. Step 5: Solve for x
    x = 376,917,869,214.31/694,872.86
  6. Step 6: Final answer
    x = 542,427.10

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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.