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Finding the Third Proportional to 664.50 and 948

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Solution

The third proportional to 664.50 and 948 is: 1,352.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    664.50 : 948 = 948 : x
  2. Step 2: Convert to fraction form
    664.50/948 = 948/x
  3. Step 3: Cross multiply
    664.50x = 948 × 948
  4. Step 4: Simplify right side
    664.50x = 898,704
  5. Step 5: Solve for x
    x = 898,704/664.50
  6. Step 6: Final answer
    x = 1,352.45

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.