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Finding the Third Proportional to 5,286 and 7,550

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Solution

The third proportional to 5,286 and 7,550 is: 10,783.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,286 : 7,550 = 7,550 : x
  2. Step 2: Convert to fraction form
    5,286/7,550 = 7,550/x
  3. Step 3: Cross multiply
    5,286x = 7,550 × 7,550
  4. Step 4: Simplify right side
    5,286x = 57,002,500
  5. Step 5: Solve for x
    x = 57,002,500/5,286
  6. Step 6: Final answer
    x = 10,783.67

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.