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Finding the Third Proportional to 7,389 and 15,816.75

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Solution

The third proportional to 7,389 and 15,816.75 is: 33,857.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,389 : 15,816.75 = 15,816.75 : x
  2. Step 2: Convert to fraction form
    7,389/15,816.75 = 15,816.75/x
  3. Step 3: Cross multiply
    7,389x = 15,816.75 × 15,816.75
  4. Step 4: Simplify right side
    7,389x = 250,169,580.56
  5. Step 5: Solve for x
    x = 250,169,580.56/7,389
  6. Step 6: Final answer
    x = 33,857.03

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.