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Finding the Third Proportional to 905.50 and 1,357.75

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Solution

The third proportional to 905.50 and 1,357.75 is: 2,035.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    905.50 : 1,357.75 = 1,357.75 : x
  2. Step 2: Convert to fraction form
    905.50/1,357.75 = 1,357.75/x
  3. Step 3: Cross multiply
    905.50x = 1,357.75 × 1,357.75
  4. Step 4: Simplify right side
    905.50x = 1,843,485.06
  5. Step 5: Solve for x
    x = 1,843,485.06/905.50
  6. Step 6: Final answer
    x = 2,035.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.