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Finding the Third Proportional to 21,789.50 and 47,035

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Solution

The third proportional to 21,789.50 and 47,035 is: 101,530.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,789.50 : 47,035 = 47,035 : x
  2. Step 2: Convert to fraction form
    21,789.50/47,035 = 47,035/x
  3. Step 3: Cross multiply
    21,789.50x = 47,035 × 47,035
  4. Step 4: Simplify right side
    21,789.50x = 2,212,291,225
  5. Step 5: Solve for x
    x = 2,212,291,225/21,789.50
  6. Step 6: Final answer
    x = 101,530.15

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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.