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Finding the Third Proportional to 18,396 and 39,732.50

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Solution

The third proportional to 18,396 and 39,732.50 is: 85,816.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,396 : 39,732.50 = 39,732.50 : x
  2. Step 2: Convert to fraction form
    18,396/39,732.50 = 39,732.50/x
  3. Step 3: Cross multiply
    18,396x = 39,732.50 × 39,732.50
  4. Step 4: Simplify right side
    18,396x = 1,578,671,556.25
  5. Step 5: Solve for x
    x = 1,578,671,556.25/18,396
  6. Step 6: Final answer
    x = 85,816.02

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.