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Finding the Third Proportional to 5,531.25 and 12,156

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Solution

The third proportional to 5,531.25 and 12,156 is: 26,715.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,531.25 : 12,156 = 12,156 : x
  2. Step 2: Convert to fraction form
    5,531.25/12,156 = 12,156/x
  3. Step 3: Cross multiply
    5,531.25x = 12,156 × 12,156
  4. Step 4: Simplify right side
    5,531.25x = 147,768,336
  5. Step 5: Solve for x
    x = 147,768,336/5,531.25
  6. Step 6: Final answer
    x = 26,715.18

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.