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Finding the Third Proportional to 504.75 and 769.50

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Solution

The third proportional to 504.75 and 769.50 is: 1,173.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.75 : 769.50 = 769.50 : x
  2. Step 2: Convert to fraction form
    504.75/769.50 = 769.50/x
  3. Step 3: Cross multiply
    504.75x = 769.50 × 769.50
  4. Step 4: Simplify right side
    504.75x = 592,130.25
  5. Step 5: Solve for x
    x = 592,130.25/504.75
  6. Step 6: Final answer
    x = 1,173.12

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.