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Finding the Third Proportional to 98.63 and 125.25

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Solution

The third proportional to 98.63 and 125.25 is: 159.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.63 : 125.25 = 125.25 : x
  2. Step 2: Convert to fraction form
    98.63/125.25 = 125.25/x
  3. Step 3: Cross multiply
    98.63x = 125.25 × 125.25
  4. Step 4: Simplify right side
    98.63x = 15,687.56
  5. Step 5: Solve for x
    x = 15,687.56/98.63
  6. Step 6: Final answer
    x = 159.06

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Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.