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Finding the Third Proportional to 3,070.75 and 7,218.38

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Solution

The third proportional to 3,070.75 and 7,218.38 is: 16,968.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,070.75 : 7,218.38 = 7,218.38 : x
  2. Step 2: Convert to fraction form
    3,070.75/7,218.38 = 7,218.38/x
  3. Step 3: Cross multiply
    3,070.75x = 7,218.38 × 7,218.38
  4. Step 4: Simplify right side
    3,070.75x = 52,104,937.64
  5. Step 5: Solve for x
    x = 52,104,937.64/3,070.75
  6. Step 6: Final answer
    x = 16,968.15

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Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.