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Finding the Third Proportional to 4,007.50 and 8,607

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Solution

The third proportional to 4,007.50 and 8,607 is: 18,485.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,007.50 : 8,607 = 8,607 : x
  2. Step 2: Convert to fraction form
    4,007.50/8,607 = 8,607/x
  3. Step 3: Cross multiply
    4,007.50x = 8,607 × 8,607
  4. Step 4: Simplify right side
    4,007.50x = 74,080,449
  5. Step 5: Solve for x
    x = 74,080,449/4,007.50
  6. Step 6: Final answer
    x = 18,485.45

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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.