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Finding the Third Proportional to 734.50 and 1,641

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Solution

The third proportional to 734.50 and 1,641 is: 3,666.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    734.50 : 1,641 = 1,641 : x
  2. Step 2: Convert to fraction form
    734.50/1,641 = 1,641/x
  3. Step 3: Cross multiply
    734.50x = 1,641 × 1,641
  4. Step 4: Simplify right side
    734.50x = 2,692,881
  5. Step 5: Solve for x
    x = 2,692,881/734.50
  6. Step 6: Final answer
    x = 3,666.28

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Why These Related Problems?

These problems maintain the same ratio (2.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.