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Finding the Third Proportional to 73,980 and 115,929

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Solution

The third proportional to 73,980 and 115,929 is: 181,664.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,980 : 115,929 = 115,929 : x
  2. Step 2: Convert to fraction form
    73,980/115,929 = 115,929/x
  3. Step 3: Cross multiply
    73,980x = 115,929 × 115,929
  4. Step 4: Simplify right side
    73,980x = 13,439,533,041
  5. Step 5: Solve for x
    x = 13,439,533,041/73,980
  6. Step 6: Final answer
    x = 181,664.41

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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.