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Finding the Fourth Proportional to 7,967.97, 11,900.99 and 7,216.37

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Solution

The fourth proportional to 7,967.97, 11,900.99 and 7,216.37 is: 10,778.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,967.97 : 11,900.99 = 7,216.37 : x
  2. Step 2: Convert to fraction form
    7,967.97/11,900.99 = 7,216.37/x
  3. Step 3: Cross multiply
    7,967.97x = 11,900.99 × 7,216.37
  4. Step 4: Simplify right side
    7,967.97x = 85,881,851.62
  5. Step 5: Solve for x
    x = 85,881,851.62/7,967.97
  6. Step 6: Final answer
    x = 10,778.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.