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Finding the Third Proportional to 664 and 953.50

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Solution

The third proportional to 664 and 953.50 is: 1,369.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    664 : 953.50 = 953.50 : x
  2. Step 2: Convert to fraction form
    664/953.50 = 953.50/x
  3. Step 3: Cross multiply
    664x = 953.50 × 953.50
  4. Step 4: Simplify right side
    664x = 909,162.25
  5. Step 5: Solve for x
    x = 909,162.25/664
  6. Step 6: Final answer
    x = 1,369.22

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.