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Finding the Third Proportional to 31,503 and 47,911.50

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Solution

The third proportional to 31,503 and 47,911.50 is: 72,866.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,503 : 47,911.50 = 47,911.50 : x
  2. Step 2: Convert to fraction form
    31,503/47,911.50 = 47,911.50/x
  3. Step 3: Cross multiply
    31,503x = 47,911.50 × 47,911.50
  4. Step 4: Simplify right side
    31,503x = 2,295,511,832.25
  5. Step 5: Solve for x
    x = 2,295,511,832.25/31,503
  6. Step 6: Final answer
    x = 72,866.45

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.