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Finding the Third Proportional to 629 and 790.50

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Solution

The third proportional to 629 and 790.50 is: 993.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    629 : 790.50 = 790.50 : x
  2. Step 2: Convert to fraction form
    629/790.50 = 790.50/x
  3. Step 3: Cross multiply
    629x = 790.50 × 790.50
  4. Step 4: Simplify right side
    629x = 624,890.25
  5. Step 5: Solve for x
    x = 624,890.25/629
  6. Step 6: Final answer
    x = 993.47

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Why These Related Problems?

These problems maintain the same ratio (1.26) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.