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Finding the Third Proportional to 461.38 and 693.75

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Solution

The third proportional to 461.38 and 693.75 is: 1,043.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.38 : 693.75 = 693.75 : x
  2. Step 2: Convert to fraction form
    461.38/693.75 = 693.75/x
  3. Step 3: Cross multiply
    461.38x = 693.75 × 693.75
  4. Step 4: Simplify right side
    461.38x = 481,289.06
  5. Step 5: Solve for x
    x = 481,289.06/461.38
  6. Step 6: Final answer
    x = 1,043.16

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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.