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Finding the Third Proportional to 68,131.50 and 106,335

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Solution

The third proportional to 68,131.50 and 106,335 is: 165,960.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,131.50 : 106,335 = 106,335 : x
  2. Step 2: Convert to fraction form
    68,131.50/106,335 = 106,335/x
  3. Step 3: Cross multiply
    68,131.50x = 106,335 × 106,335
  4. Step 4: Simplify right side
    68,131.50x = 11,307,132,225
  5. Step 5: Solve for x
    x = 11,307,132,225/68,131.50
  6. Step 6: Final answer
    x = 165,960.42

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.