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Finding the Third Proportional to 476 and 625

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Solution

The third proportional to 476 and 625 is: 820.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    476 : 625 = 625 : x
  2. Step 2: Convert to fraction form
    476/625 = 625/x
  3. Step 3: Cross multiply
    476x = 625 × 625
  4. Step 4: Simplify right side
    476x = 390,625
  5. Step 5: Solve for x
    x = 390,625/476
  6. Step 6: Final answer
    x = 820.64

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.