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Finding the Third Proportional to 4,168 and 8,915

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Solution

The third proportional to 4,168 and 8,915 is: 19,068.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,168 : 8,915 = 8,915 : x
  2. Step 2: Convert to fraction form
    4,168/8,915 = 8,915/x
  3. Step 3: Cross multiply
    4,168x = 8,915 × 8,915
  4. Step 4: Simplify right side
    4,168x = 79,477,225
  5. Step 5: Solve for x
    x = 79,477,225/4,168
  6. Step 6: Final answer
    x = 19,068.43

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.