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Finding the Third Proportional to 13,670 and 20,433

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Solution

The third proportional to 13,670 and 20,433 is: 30,541.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,670 : 20,433 = 20,433 : x
  2. Step 2: Convert to fraction form
    13,670/20,433 = 20,433/x
  3. Step 3: Cross multiply
    13,670x = 20,433 × 20,433
  4. Step 4: Simplify right side
    13,670x = 417,507,489
  5. Step 5: Solve for x
    x = 417,507,489/13,670
  6. Step 6: Final answer
    x = 30,541.88

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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.