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Finding the Third Proportional to 106,886 and 169,240

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Solution

The third proportional to 106,886 and 169,240 is: 267,969.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,886 : 169,240 = 169,240 : x
  2. Step 2: Convert to fraction form
    106,886/169,240 = 169,240/x
  3. Step 3: Cross multiply
    106,886x = 169,240 × 169,240
  4. Step 4: Simplify right side
    106,886x = 28,642,177,600
  5. Step 5: Solve for x
    x = 28,642,177,600/106,886
  6. Step 6: Final answer
    x = 267,969.40

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.