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Finding the Third Proportional to 5,913 and 6,822

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Solution

The third proportional to 5,913 and 6,822 is: 7,870.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,913 : 6,822 = 6,822 : x
  2. Step 2: Convert to fraction form
    5,913/6,822 = 6,822/x
  3. Step 3: Cross multiply
    5,913x = 6,822 × 6,822
  4. Step 4: Simplify right side
    5,913x = 46,539,684
  5. Step 5: Solve for x
    x = 46,539,684/5,913
  6. Step 6: Final answer
    x = 7,870.74

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.