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Finding the Third Proportional to 2,900.81 and 6,424.31

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Solution

The third proportional to 2,900.81 and 6,424.31 is: 14,227.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,900.81 : 6,424.31 = 6,424.31 : x
  2. Step 2: Convert to fraction form
    2,900.81/6,424.31 = 6,424.31/x
  3. Step 3: Cross multiply
    2,900.81x = 6,424.31 × 6,424.31
  4. Step 4: Simplify right side
    2,900.81x = 41,271,791.10
  5. Step 5: Solve for x
    x = 41,271,791.10/2,900.81
  6. Step 6: Final answer
    x = 14,227.67

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.