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Finding the Third Proportional to 18,223.50 and 27,240

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Solution

The third proportional to 18,223.50 and 27,240 is: 40,717.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,223.50 : 27,240 = 27,240 : x
  2. Step 2: Convert to fraction form
    18,223.50/27,240 = 27,240/x
  3. Step 3: Cross multiply
    18,223.50x = 27,240 × 27,240
  4. Step 4: Simplify right side
    18,223.50x = 742,017,600
  5. Step 5: Solve for x
    x = 742,017,600/18,223.50
  6. Step 6: Final answer
    x = 40,717.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.