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Finding the Third Proportional to 68,941.50 and 105,417

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Solution

The third proportional to 68,941.50 and 105,417 is: 161,190.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,941.50 : 105,417 = 105,417 : x
  2. Step 2: Convert to fraction form
    68,941.50/105,417 = 105,417/x
  3. Step 3: Cross multiply
    68,941.50x = 105,417 × 105,417
  4. Step 4: Simplify right side
    68,941.50x = 11,112,743,889
  5. Step 5: Solve for x
    x = 11,112,743,889/68,941.50
  6. Step 6: Final answer
    x = 161,190.92

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.