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Finding the Third Proportional to 31.13 and 44.50

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Solution

The third proportional to 31.13 and 44.50 is: 63.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31.13 : 44.50 = 44.50 : x
  2. Step 2: Convert to fraction form
    31.13/44.50 = 44.50/x
  3. Step 3: Cross multiply
    31.13x = 44.50 × 44.50
  4. Step 4: Simplify right side
    31.13x = 1,980.25
  5. Step 5: Solve for x
    x = 1,980.25/31.13
  6. Step 6: Final answer
    x = 63.62

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.