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Finding the Third Proportional to 51,968 and 78,326

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Solution

The third proportional to 51,968 and 78,326 is: 118,052.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,968 : 78,326 = 78,326 : x
  2. Step 2: Convert to fraction form
    51,968/78,326 = 78,326/x
  3. Step 3: Cross multiply
    51,968x = 78,326 × 78,326
  4. Step 4: Simplify right side
    51,968x = 6,134,962,276
  5. Step 5: Solve for x
    x = 6,134,962,276/51,968
  6. Step 6: Final answer
    x = 118,052.69

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.