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Finding the Third Proportional to 3,334 and 7,172.50

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Solution

The third proportional to 3,334 and 7,172.50 is: 15,430.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,334 : 7,172.50 = 7,172.50 : x
  2. Step 2: Convert to fraction form
    3,334/7,172.50 = 7,172.50/x
  3. Step 3: Cross multiply
    3,334x = 7,172.50 × 7,172.50
  4. Step 4: Simplify right side
    3,334x = 51,444,756.25
  5. Step 5: Solve for x
    x = 51,444,756.25/3,334
  6. Step 6: Final answer
    x = 15,430.34

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.