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Finding the Third Proportional to 74,090 and 159,856

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Solution

The third proportional to 74,090 and 159,856 is: 344,904.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,090 : 159,856 = 159,856 : x
  2. Step 2: Convert to fraction form
    74,090/159,856 = 159,856/x
  3. Step 3: Cross multiply
    74,090x = 159,856 × 159,856
  4. Step 4: Simplify right side
    74,090x = 25,553,940,736
  5. Step 5: Solve for x
    x = 25,553,940,736/74,090
  6. Step 6: Final answer
    x = 344,904.05

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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.