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Finding the Third Proportional to 4,158 and 6,929

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Solution

The third proportional to 4,158 and 6,929 is: 11,546.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,158 : 6,929 = 6,929 : x
  2. Step 2: Convert to fraction form
    4,158/6,929 = 6,929/x
  3. Step 3: Cross multiply
    4,158x = 6,929 × 6,929
  4. Step 4: Simplify right side
    4,158x = 48,011,041
  5. Step 5: Solve for x
    x = 48,011,041/4,158
  6. Step 6: Final answer
    x = 11,546.67

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Why These Related Problems?

These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.