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Finding the Third Proportional to 77,721.75 and 116,101.50

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Solution

The third proportional to 77,721.75 and 116,101.50 is: 173,433.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,721.75 : 116,101.50 = 116,101.50 : x
  2. Step 2: Convert to fraction form
    77,721.75/116,101.50 = 116,101.50/x
  3. Step 3: Cross multiply
    77,721.75x = 116,101.50 × 116,101.50
  4. Step 4: Simplify right side
    77,721.75x = 13,479,558,302.25
  5. Step 5: Solve for x
    x = 13,479,558,302.25/77,721.75
  6. Step 6: Final answer
    x = 173,433.54

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.