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Finding the Third Proportional to 21,413.25 and 45,621

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Solution

The third proportional to 21,413.25 and 45,621 is: 97,195.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,413.25 : 45,621 = 45,621 : x
  2. Step 2: Convert to fraction form
    21,413.25/45,621 = 45,621/x
  3. Step 3: Cross multiply
    21,413.25x = 45,621 × 45,621
  4. Step 4: Simplify right side
    21,413.25x = 2,081,275,641
  5. Step 5: Solve for x
    x = 2,081,275,641/21,413.25
  6. Step 6: Final answer
    x = 97,195.69

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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.