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Finding the Third Proportional to 673 and 1,047

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Solution

The third proportional to 673 and 1,047 is: 1,628.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    673 : 1,047 = 1,047 : x
  2. Step 2: Convert to fraction form
    673/1,047 = 1,047/x
  3. Step 3: Cross multiply
    673x = 1,047 × 1,047
  4. Step 4: Simplify right side
    673x = 1,096,209
  5. Step 5: Solve for x
    x = 1,096,209/673
  6. Step 6: Final answer
    x = 1,628.84

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.