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Finding the Third Proportional to 7,429.50 and 11,146

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Solution

The third proportional to 7,429.50 and 11,146 is: 16,721.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,429.50 : 11,146 = 11,146 : x
  2. Step 2: Convert to fraction form
    7,429.50/11,146 = 11,146/x
  3. Step 3: Cross multiply
    7,429.50x = 11,146 × 11,146
  4. Step 4: Simplify right side
    7,429.50x = 124,233,316
  5. Step 5: Solve for x
    x = 124,233,316/7,429.50
  6. Step 6: Final answer
    x = 16,721.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.