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Finding the Third Proportional to 21,852.50 and 47,917

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Solution

The third proportional to 21,852.50 and 47,917 is: 105,069.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,852.50 : 47,917 = 47,917 : x
  2. Step 2: Convert to fraction form
    21,852.50/47,917 = 47,917/x
  3. Step 3: Cross multiply
    21,852.50x = 47,917 × 47,917
  4. Step 4: Simplify right side
    21,852.50x = 2,296,038,889
  5. Step 5: Solve for x
    x = 2,296,038,889/21,852.50
  6. Step 6: Final answer
    x = 105,069.85

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.