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Finding the Third Proportional to 6,991.50 and 15,136.50

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Solution

The third proportional to 6,991.50 and 15,136.50 is: 32,770.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,991.50 : 15,136.50 = 15,136.50 : x
  2. Step 2: Convert to fraction form
    6,991.50/15,136.50 = 15,136.50/x
  3. Step 3: Cross multiply
    6,991.50x = 15,136.50 × 15,136.50
  4. Step 4: Simplify right side
    6,991.50x = 229,113,632.25
  5. Step 5: Solve for x
    x = 229,113,632.25/6,991.50
  6. Step 6: Final answer
    x = 32,770.31

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.