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Finding the Third Proportional to 21,505.50 and 47,367

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Solution

The third proportional to 21,505.50 and 47,367 is: 104,328.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,505.50 : 47,367 = 47,367 : x
  2. Step 2: Convert to fraction form
    21,505.50/47,367 = 47,367/x
  3. Step 3: Cross multiply
    21,505.50x = 47,367 × 47,367
  4. Step 4: Simplify right side
    21,505.50x = 2,243,632,689
  5. Step 5: Solve for x
    x = 2,243,632,689/21,505.50
  6. Step 6: Final answer
    x = 104,328.32

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.