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Finding the Third Proportional to 18,724 and 40,044

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Solution

The third proportional to 18,724 and 40,044 is: 85,639.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,724 : 40,044 = 40,044 : x
  2. Step 2: Convert to fraction form
    18,724/40,044 = 40,044/x
  3. Step 3: Cross multiply
    18,724x = 40,044 × 40,044
  4. Step 4: Simplify right side
    18,724x = 1,603,521,936
  5. Step 5: Solve for x
    x = 1,603,521,936/18,724
  6. Step 6: Final answer
    x = 85,639.92

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.