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Finding the Fourth Proportional to 967, 1,333.83 and 635.71

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Solution

The fourth proportional to 967, 1,333.83 and 635.71 is: 876.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    967 : 1,333.83 = 635.71 : x
  2. Step 2: Convert to fraction form
    967/1,333.83 = 635.71/x
  3. Step 3: Cross multiply
    967x = 1,333.83 × 635.71
  4. Step 4: Simplify right side
    967x = 847,929.07
  5. Step 5: Solve for x
    x = 847,929.07/967
  6. Step 6: Final answer
    x = 876.87

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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.