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Finding the Third Proportional to 3,090.50 and 6,666.50

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Solution

The third proportional to 3,090.50 and 6,666.50 is: 14,380.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090.50 : 6,666.50 = 6,666.50 : x
  2. Step 2: Convert to fraction form
    3,090.50/6,666.50 = 6,666.50/x
  3. Step 3: Cross multiply
    3,090.50x = 6,666.50 × 6,666.50
  4. Step 4: Simplify right side
    3,090.50x = 44,442,222.25
  5. Step 5: Solve for x
    x = 44,442,222.25/3,090.50
  6. Step 6: Final answer
    x = 14,380.27

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.