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Finding the Third Proportional to 193.50 and 492.75

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Solution

The third proportional to 193.50 and 492.75 is: 1,254.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.50 : 492.75 = 492.75 : x
  2. Step 2: Convert to fraction form
    193.50/492.75 = 492.75/x
  3. Step 3: Cross multiply
    193.50x = 492.75 × 492.75
  4. Step 4: Simplify right side
    193.50x = 242,802.56
  5. Step 5: Solve for x
    x = 242,802.56/193.50
  6. Step 6: Final answer
    x = 1,254.79

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Why These Related Problems?

These problems maintain the same ratio (2.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.