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Finding the Third Proportional to 7,099.21 and 11,137.18

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Solution

The third proportional to 7,099.21 and 11,137.18 is: 17,471.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,099.21 : 11,137.18 = 11,137.18 : x
  2. Step 2: Convert to fraction form
    7,099.21/11,137.18 = 11,137.18/x
  3. Step 3: Cross multiply
    7,099.21x = 11,137.18 × 11,137.18
  4. Step 4: Simplify right side
    7,099.21x = 124,036,858.40
  5. Step 5: Solve for x
    x = 124,036,858.40/7,099.21
  6. Step 6: Final answer
    x = 17,471.93

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.