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Finding the Third Proportional to 2,990.67 and 6,985.27

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Solution

The third proportional to 2,990.67 and 6,985.27 is: 16,315.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.67 : 6,985.27 = 6,985.27 : x
  2. Step 2: Convert to fraction form
    2,990.67/6,985.27 = 6,985.27/x
  3. Step 3: Cross multiply
    2,990.67x = 6,985.27 × 6,985.27
  4. Step 4: Simplify right side
    2,990.67x = 48,793,935.85
  5. Step 5: Solve for x
    x = 48,793,935.85/2,990.67
  6. Step 6: Final answer
    x = 16,315.38

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Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.