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Finding the Third Proportional to 468.75 and 747.75

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Solution

The third proportional to 468.75 and 747.75 is: 1,192.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.75 : 747.75 = 747.75 : x
  2. Step 2: Convert to fraction form
    468.75/747.75 = 747.75/x
  3. Step 3: Cross multiply
    468.75x = 747.75 × 747.75
  4. Step 4: Simplify right side
    468.75x = 559,130.06
  5. Step 5: Solve for x
    x = 559,130.06/468.75
  6. Step 6: Final answer
    x = 1,192.81

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.