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Finding the Third Proportional to 168,990 and 361,968

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Solution

The third proportional to 168,990 and 361,968 is: 775,317.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,990 : 361,968 = 361,968 : x
  2. Step 2: Convert to fraction form
    168,990/361,968 = 361,968/x
  3. Step 3: Cross multiply
    168,990x = 361,968 × 361,968
  4. Step 4: Simplify right side
    168,990x = 131,020,833,024
  5. Step 5: Solve for x
    x = 131,020,833,024/168,990
  6. Step 6: Final answer
    x = 775,317.08

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.