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Finding the Third Proportional to 83,428 and 179,896

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Solution

The third proportional to 83,428 and 179,896 is: 387,910.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,428 : 179,896 = 179,896 : x
  2. Step 2: Convert to fraction form
    83,428/179,896 = 179,896/x
  3. Step 3: Cross multiply
    83,428x = 179,896 × 179,896
  4. Step 4: Simplify right side
    83,428x = 32,362,570,816
  5. Step 5: Solve for x
    x = 32,362,570,816/83,428
  6. Step 6: Final answer
    x = 387,910.18

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.