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Finding the Third Proportional to 693.75 and 1,623

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Solution

The third proportional to 693.75 and 1,623 is: 3,796.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.75 : 1,623 = 1,623 : x
  2. Step 2: Convert to fraction form
    693.75/1,623 = 1,623/x
  3. Step 3: Cross multiply
    693.75x = 1,623 × 1,623
  4. Step 4: Simplify right side
    693.75x = 2,634,129
  5. Step 5: Solve for x
    x = 2,634,129/693.75
  6. Step 6: Final answer
    x = 3,796.94

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Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.