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Finding the Third Proportional to 330.96 and 492.75

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Solution

The third proportional to 330.96 and 492.75 is: 733.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.96 : 492.75 = 492.75 : x
  2. Step 2: Convert to fraction form
    330.96/492.75 = 492.75/x
  3. Step 3: Cross multiply
    330.96x = 492.75 × 492.75
  4. Step 4: Simplify right side
    330.96x = 242,802.56
  5. Step 5: Solve for x
    x = 242,802.56/330.96
  6. Step 6: Final answer
    x = 733.63

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.