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Finding the Fourth Proportional to 7,679.84, 10,596.28 and 4,322

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Solution

The fourth proportional to 7,679.84, 10,596.28 and 4,322 is: 5,963.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,679.84 : 10,596.28 = 4,322 : x
  2. Step 2: Convert to fraction form
    7,679.84/10,596.28 = 4,322/x
  3. Step 3: Cross multiply
    7,679.84x = 10,596.28 × 4,322
  4. Step 4: Simplify right side
    7,679.84x = 45,797,122.16
  5. Step 5: Solve for x
    x = 45,797,122.16/7,679.84
  6. Step 6: Final answer
    x = 5,963.29

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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.