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Finding the Third Proportional to 713.63 and 999

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Solution

The third proportional to 713.63 and 999 is: 1,398.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.63 : 999 = 999 : x
  2. Step 2: Convert to fraction form
    713.63/999 = 999/x
  3. Step 3: Cross multiply
    713.63x = 999 × 999
  4. Step 4: Simplify right side
    713.63x = 998,001
  5. Step 5: Solve for x
    x = 998,001/713.63
  6. Step 6: Final answer
    x = 1,398.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.