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Finding the Third Proportional to 5,320 and 7,556

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Solution

The third proportional to 5,320 and 7,556 is: 10,731.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320 : 7,556 = 7,556 : x
  2. Step 2: Convert to fraction form
    5,320/7,556 = 7,556/x
  3. Step 3: Cross multiply
    5,320x = 7,556 × 7,556
  4. Step 4: Simplify right side
    5,320x = 57,093,136
  5. Step 5: Solve for x
    x = 57,093,136/5,320
  6. Step 6: Final answer
    x = 10,731.79

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.