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Finding the Third Proportional to 4,806 and 7,209

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Solution

The third proportional to 4,806 and 7,209 is: 10,813.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,806 : 7,209 = 7,209 : x
  2. Step 2: Convert to fraction form
    4,806/7,209 = 7,209/x
  3. Step 3: Cross multiply
    4,806x = 7,209 × 7,209
  4. Step 4: Simplify right side
    4,806x = 51,969,681
  5. Step 5: Solve for x
    x = 51,969,681/4,806
  6. Step 6: Final answer
    x = 10,813.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.