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Finding the Third Proportional to 76,428 and 166,500

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Solution

The third proportional to 76,428 and 166,500 is: 362,723.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,428 : 166,500 = 166,500 : x
  2. Step 2: Convert to fraction form
    76,428/166,500 = 166,500/x
  3. Step 3: Cross multiply
    76,428x = 166,500 × 166,500
  4. Step 4: Simplify right side
    76,428x = 27,722,250,000
  5. Step 5: Solve for x
    x = 27,722,250,000/76,428
  6. Step 6: Final answer
    x = 362,723.74

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.