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Finding the Third Proportional to 112,212 and 163,980

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Solution

The third proportional to 112,212 and 163,980 is: 239,630.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,212 : 163,980 = 163,980 : x
  2. Step 2: Convert to fraction form
    112,212/163,980 = 163,980/x
  3. Step 3: Cross multiply
    112,212x = 163,980 × 163,980
  4. Step 4: Simplify right side
    112,212x = 26,889,440,400
  5. Step 5: Solve for x
    x = 26,889,440,400/112,212
  6. Step 6: Final answer
    x = 239,630.70

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.