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Finding the Third Proportional to 78,833.25 and 122,395.50

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Solution

The third proportional to 78,833.25 and 122,395.50 is: 190,029.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,833.25 : 122,395.50 = 122,395.50 : x
  2. Step 2: Convert to fraction form
    78,833.25/122,395.50 = 122,395.50/x
  3. Step 3: Cross multiply
    78,833.25x = 122,395.50 × 122,395.50
  4. Step 4: Simplify right side
    78,833.25x = 14,980,658,420.25
  5. Step 5: Solve for x
    x = 14,980,658,420.25/78,833.25
  6. Step 6: Final answer
    x = 190,029.69

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These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.