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Finding the Third Proportional to 3,089.81 and 4,815.56

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Solution

The third proportional to 3,089.81 and 4,815.56 is: 7,505.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,089.81 : 4,815.56 = 4,815.56 : x
  2. Step 2: Convert to fraction form
    3,089.81/4,815.56 = 4,815.56/x
  3. Step 3: Cross multiply
    3,089.81x = 4,815.56 × 4,815.56
  4. Step 4: Simplify right side
    3,089.81x = 23,189,642.19
  5. Step 5: Solve for x
    x = 23,189,642.19/3,089.81
  6. Step 6: Final answer
    x = 7,505.19

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.