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Finding the Third Proportional to 55,129.75 and 82,477.75

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Solution

The third proportional to 55,129.75 and 82,477.75 is: 123,392.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,129.75 : 82,477.75 = 82,477.75 : x
  2. Step 2: Convert to fraction form
    55,129.75/82,477.75 = 82,477.75/x
  3. Step 3: Cross multiply
    55,129.75x = 82,477.75 × 82,477.75
  4. Step 4: Simplify right side
    55,129.75x = 6,802,579,245.06
  5. Step 5: Solve for x
    x = 6,802,579,245.06/55,129.75
  6. Step 6: Final answer
    x = 123,392.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.