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Finding the Third Proportional to 432.75 and 662.63

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Solution

The third proportional to 432.75 and 662.63 is: 1,014.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    432.75 : 662.63 = 662.63 : x
  2. Step 2: Convert to fraction form
    432.75/662.63 = 662.63/x
  3. Step 3: Cross multiply
    432.75x = 662.63 × 662.63
  4. Step 4: Simplify right side
    432.75x = 439,071.89
  5. Step 5: Solve for x
    x = 439,071.89/432.75
  6. Step 6: Final answer
    x = 1,014.61

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.