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Finding the Third Proportional to 15,186 and 20,433

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Solution

The third proportional to 15,186 and 20,433 is: 27,492.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,186 : 20,433 = 20,433 : x
  2. Step 2: Convert to fraction form
    15,186/20,433 = 20,433/x
  3. Step 3: Cross multiply
    15,186x = 20,433 × 20,433
  4. Step 4: Simplify right side
    15,186x = 417,507,489
  5. Step 5: Solve for x
    x = 417,507,489/15,186
  6. Step 6: Final answer
    x = 27,492.92

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.