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Finding the Third Proportional to 715.75 and 1,563

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Solution

The third proportional to 715.75 and 1,563 is: 3,413.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    715.75 : 1,563 = 1,563 : x
  2. Step 2: Convert to fraction form
    715.75/1,563 = 1,563/x
  3. Step 3: Cross multiply
    715.75x = 1,563 × 1,563
  4. Step 4: Simplify right side
    715.75x = 2,442,969
  5. Step 5: Solve for x
    x = 2,442,969/715.75
  6. Step 6: Final answer
    x = 3,413.16

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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.