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Finding the Third Proportional to 2,188 and 4,670

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Solution

The third proportional to 2,188 and 4,670 is: 9,967.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188 : 4,670 = 4,670 : x
  2. Step 2: Convert to fraction form
    2,188/4,670 = 4,670/x
  3. Step 3: Cross multiply
    2,188x = 4,670 × 4,670
  4. Step 4: Simplify right side
    2,188x = 21,808,900
  5. Step 5: Solve for x
    x = 21,808,900/2,188
  6. Step 6: Final answer
    x = 9,967.50

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.