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Finding the Third Proportional to 50,425.50 and 66,890

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Solution

The third proportional to 50,425.50 and 66,890 is: 88,730.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,425.50 : 66,890 = 66,890 : x
  2. Step 2: Convert to fraction form
    50,425.50/66,890 = 66,890/x
  3. Step 3: Cross multiply
    50,425.50x = 66,890 × 66,890
  4. Step 4: Simplify right side
    50,425.50x = 4,474,272,100
  5. Step 5: Solve for x
    x = 4,474,272,100/50,425.50
  6. Step 6: Final answer
    x = 88,730.35

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.