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Finding the Third Proportional to 29,996 and 64,600

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Solution

The third proportional to 29,996 and 64,600 is: 139,123.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,996 : 64,600 = 64,600 : x
  2. Step 2: Convert to fraction form
    29,996/64,600 = 64,600/x
  3. Step 3: Cross multiply
    29,996x = 64,600 × 64,600
  4. Step 4: Simplify right side
    29,996x = 4,173,160,000
  5. Step 5: Solve for x
    x = 4,173,160,000/29,996
  6. Step 6: Final answer
    x = 139,123.88

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.