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Finding the Fourth Proportional to 9,884, 13,639.92 and 5,468

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Solution

The fourth proportional to 9,884, 13,639.92 and 5,468 is: 7,545.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,884 : 13,639.92 = 5,468 : x
  2. Step 2: Convert to fraction form
    9,884/13,639.92 = 5,468/x
  3. Step 3: Cross multiply
    9,884x = 13,639.92 × 5,468
  4. Step 4: Simplify right side
    9,884x = 74,583,082.56
  5. Step 5: Solve for x
    x = 74,583,082.56/9,884
  6. Step 6: Final answer
    x = 7,545.84

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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.