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Finding the Fourth Proportional to 18,408.25, 27,737.68 and 16,394.16

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Solution

The fourth proportional to 18,408.25, 27,737.68 and 16,394.16 is: 24,702.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,408.25 : 27,737.68 = 16,394.16 : x
  2. Step 2: Convert to fraction form
    18,408.25/27,737.68 = 16,394.16/x
  3. Step 3: Cross multiply
    18,408.25x = 27,737.68 × 16,394.16
  4. Step 4: Simplify right side
    18,408.25x = 454,735,963.95
  5. Step 5: Solve for x
    x = 454,735,963.95/18,408.25
  6. Step 6: Final answer
    x = 24,702.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.