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Finding the Third Proportional to 21,430 and 46,668

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Solution

The third proportional to 21,430 and 46,668 is: 101,628.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,430 : 46,668 = 46,668 : x
  2. Step 2: Convert to fraction form
    21,430/46,668 = 46,668/x
  3. Step 3: Cross multiply
    21,430x = 46,668 × 46,668
  4. Step 4: Simplify right side
    21,430x = 2,177,902,224
  5. Step 5: Solve for x
    x = 2,177,902,224/21,430
  6. Step 6: Final answer
    x = 101,628.66

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.