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Finding the Third Proportional to 78,963.75 and 124,083

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Solution

The third proportional to 78,963.75 and 124,083 is: 194,983.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,963.75 : 124,083 = 124,083 : x
  2. Step 2: Convert to fraction form
    78,963.75/124,083 = 124,083/x
  3. Step 3: Cross multiply
    78,963.75x = 124,083 × 124,083
  4. Step 4: Simplify right side
    78,963.75x = 15,396,590,889
  5. Step 5: Solve for x
    x = 15,396,590,889/78,963.75
  6. Step 6: Final answer
    x = 194,983.03

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.