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Finding the Third Proportional to 905.63 and 1,112.63

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Solution

The third proportional to 905.63 and 1,112.63 is: 1,366.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    905.63 : 1,112.63 = 1,112.63 : x
  2. Step 2: Convert to fraction form
    905.63/1,112.63 = 1,112.63/x
  3. Step 3: Cross multiply
    905.63x = 1,112.63 × 1,112.63
  4. Step 4: Simplify right side
    905.63x = 1,237,934.39
  5. Step 5: Solve for x
    x = 1,237,934.39/905.63
  6. Step 6: Final answer
    x = 1,366.94

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Why These Related Problems?

These problems maintain the same ratio (1.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.