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Finding the Fourth Proportional to 383,497.62, 530,183.25 and 287,838.24

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Solution

The fourth proportional to 383,497.62, 530,183.25 and 287,838.24 is: 397,934.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,497.62 : 530,183.25 = 287,838.24 : x
  2. Step 2: Convert to fraction form
    383,497.62/530,183.25 = 287,838.24/x
  3. Step 3: Cross multiply
    383,497.62x = 530,183.25 × 287,838.24
  4. Step 4: Simplify right side
    383,497.62x = 152,607,013,557.48
  5. Step 5: Solve for x
    x = 152,607,013,557.48/383,497.62
  6. Step 6: Final answer
    x = 397,934.71

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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.