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Finding the Third Proportional to 4,639.78 and 7,394.41

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Solution

The third proportional to 4,639.78 and 7,394.41 is: 11,784.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,639.78 : 7,394.41 = 7,394.41 : x
  2. Step 2: Convert to fraction form
    4,639.78/7,394.41 = 7,394.41/x
  3. Step 3: Cross multiply
    4,639.78x = 7,394.41 × 7,394.41
  4. Step 4: Simplify right side
    4,639.78x = 54,677,359.33
  5. Step 5: Solve for x
    x = 54,677,359.33/4,639.78
  6. Step 6: Final answer
    x = 11,784.47

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.