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Finding the Fourth Proportional to 269,183.52, 403,781.76 and 128,787.84

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Solution

The fourth proportional to 269,183.52, 403,781.76 and 128,787.84 is: 193,184.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,183.52 : 403,781.76 = 128,787.84 : x
  2. Step 2: Convert to fraction form
    269,183.52/403,781.76 = 128,787.84/x
  3. Step 3: Cross multiply
    269,183.52x = 403,781.76 × 128,787.84
  4. Step 4: Simplify right side
    269,183.52x = 52,002,180,701.80
  5. Step 5: Solve for x
    x = 52,002,180,701.80/269,183.52
  6. Step 6: Final answer
    x = 193,184.86

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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.