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Finding the Third Proportional to 4,979.81 and 7,355.81

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Solution

The third proportional to 4,979.81 and 7,355.81 is: 10,865.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.81 : 7,355.81 = 7,355.81 : x
  2. Step 2: Convert to fraction form
    4,979.81/7,355.81 = 7,355.81/x
  3. Step 3: Cross multiply
    4,979.81x = 7,355.81 × 7,355.81
  4. Step 4: Simplify right side
    4,979.81x = 54,107,977.54
  5. Step 5: Solve for x
    x = 54,107,977.54/4,979.81
  6. Step 6: Final answer
    x = 10,865.46

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.