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Finding the Fourth Proportional to 11,485.22, 17,232.11 and 7,821.99

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Solution

The fourth proportional to 11,485.22, 17,232.11 and 7,821.99 is: 11,735.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,485.22 : 17,232.11 = 7,821.99 : x
  2. Step 2: Convert to fraction form
    11,485.22/17,232.11 = 7,821.99/x
  3. Step 3: Cross multiply
    11,485.22x = 17,232.11 × 7,821.99
  4. Step 4: Simplify right side
    11,485.22x = 134,789,352.99
  5. Step 5: Solve for x
    x = 134,789,352.99/11,485.22
  6. Step 6: Final answer
    x = 11,735.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.