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Finding the Third Proportional to 5,190 and 6,992

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Solution

The third proportional to 5,190 and 6,992 is: 9,419.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190 : 6,992 = 6,992 : x
  2. Step 2: Convert to fraction form
    5,190/6,992 = 6,992/x
  3. Step 3: Cross multiply
    5,190x = 6,992 × 6,992
  4. Step 4: Simplify right side
    5,190x = 48,888,064
  5. Step 5: Solve for x
    x = 48,888,064/5,190
  6. Step 6: Final answer
    x = 9,419.67

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.