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Finding the Third Proportional to 6,639.19 and 14,439.94

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Solution

The third proportional to 6,639.19 and 14,439.94 is: 31,406.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.19 : 14,439.94 = 14,439.94 : x
  2. Step 2: Convert to fraction form
    6,639.19/14,439.94 = 14,439.94/x
  3. Step 3: Cross multiply
    6,639.19x = 14,439.94 × 14,439.94
  4. Step 4: Simplify right side
    6,639.19x = 208,511,795.00
  5. Step 5: Solve for x
    x = 208,511,795.00/6,639.19
  6. Step 6: Final answer
    x = 31,406.22

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.