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Finding the Third Proportional to 108,869.63 and 171,081

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Solution

The third proportional to 108,869.63 and 171,081 is: 268,841.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,869.63 : 171,081 = 171,081 : x
  2. Step 2: Convert to fraction form
    108,869.63/171,081 = 171,081/x
  3. Step 3: Cross multiply
    108,869.63x = 171,081 × 171,081
  4. Step 4: Simplify right side
    108,869.63x = 29,268,708,561
  5. Step 5: Solve for x
    x = 29,268,708,561/108,869.63
  6. Step 6: Final answer
    x = 268,841.82

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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.