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Finding the Third Proportional to 4,704 and 7,200

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Solution

The third proportional to 4,704 and 7,200 is: 11,020.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,704 : 7,200 = 7,200 : x
  2. Step 2: Convert to fraction form
    4,704/7,200 = 7,200/x
  3. Step 3: Cross multiply
    4,704x = 7,200 × 7,200
  4. Step 4: Simplify right side
    4,704x = 51,840,000
  5. Step 5: Solve for x
    x = 51,840,000/4,704
  6. Step 6: Final answer
    x = 11,020.41

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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.