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Finding the Third Proportional to 100,970 and 155,666

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Solution

The third proportional to 100,970 and 155,666 is: 239,991.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,970 : 155,666 = 155,666 : x
  2. Step 2: Convert to fraction form
    100,970/155,666 = 155,666/x
  3. Step 3: Cross multiply
    100,970x = 155,666 × 155,666
  4. Step 4: Simplify right side
    100,970x = 24,231,903,556
  5. Step 5: Solve for x
    x = 24,231,903,556/100,970
  6. Step 6: Final answer
    x = 239,991.12

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.