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Finding the Third Proportional to 331.88 and 436.50

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Solution

The third proportional to 331.88 and 436.50 is: 574.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.88 : 436.50 = 436.50 : x
  2. Step 2: Convert to fraction form
    331.88/436.50 = 436.50/x
  3. Step 3: Cross multiply
    331.88x = 436.50 × 436.50
  4. Step 4: Simplify right side
    331.88x = 190,532.25
  5. Step 5: Solve for x
    x = 190,532.25/331.88
  6. Step 6: Final answer
    x = 574.11

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.