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Finding the Fourth Proportional to 8,610.99, 12,918.31 and 3,066.04

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Solution

The fourth proportional to 8,610.99, 12,918.31 and 3,066.04 is: 4,599.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,610.99 : 12,918.31 = 3,066.04 : x
  2. Step 2: Convert to fraction form
    8,610.99/12,918.31 = 3,066.04/x
  3. Step 3: Cross multiply
    8,610.99x = 12,918.31 × 3,066.04
  4. Step 4: Simplify right side
    8,610.99x = 39,608,015.23
  5. Step 5: Solve for x
    x = 39,608,015.23/8,610.99
  6. Step 6: Final answer
    x = 4,599.71

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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.