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Finding the Third Proportional to 100,963.50 and 155,657

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Solution

The third proportional to 100,963.50 and 155,657 is: 239,978.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,963.50 : 155,657 = 155,657 : x
  2. Step 2: Convert to fraction form
    100,963.50/155,657 = 155,657/x
  3. Step 3: Cross multiply
    100,963.50x = 155,657 × 155,657
  4. Step 4: Simplify right side
    100,963.50x = 24,229,101,649
  5. Step 5: Solve for x
    x = 24,229,101,649/100,963.50
  6. Step 6: Final answer
    x = 239,978.82

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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.