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Finding the Third Proportional to 368.50 and 425

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Solution

The third proportional to 368.50 and 425 is: 490.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.50 : 425 = 425 : x
  2. Step 2: Convert to fraction form
    368.50/425 = 425/x
  3. Step 3: Cross multiply
    368.50x = 425 × 425
  4. Step 4: Simplify right side
    368.50x = 180,625
  5. Step 5: Solve for x
    x = 180,625/368.50
  6. Step 6: Final answer
    x = 490.16

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.