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Finding the Third Proportional to 47,698.50 and 102,777

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Solution

The third proportional to 47,698.50 and 102,777 is: 221,455.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,698.50 : 102,777 = 102,777 : x
  2. Step 2: Convert to fraction form
    47,698.50/102,777 = 102,777/x
  3. Step 3: Cross multiply
    47,698.50x = 102,777 × 102,777
  4. Step 4: Simplify right side
    47,698.50x = 10,563,111,729
  5. Step 5: Solve for x
    x = 10,563,111,729/47,698.50
  6. Step 6: Final answer
    x = 221,455.85

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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.