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Finding the Third Proportional to 65.69 and 101.38

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Solution

The third proportional to 65.69 and 101.38 is: 156.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    65.69 : 101.38 = 101.38 : x
  2. Step 2: Convert to fraction form
    65.69/101.38 = 101.38/x
  3. Step 3: Cross multiply
    65.69x = 101.38 × 101.38
  4. Step 4: Simplify right side
    65.69x = 10,276.89
  5. Step 5: Solve for x
    x = 10,276.89/65.69
  6. Step 6: Final answer
    x = 156.45

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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.