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Finding the Fourth Proportional to 8,618.36, 12,932.44 and 4,669.60

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Solution

The fourth proportional to 8,618.36, 12,932.44 and 4,669.60 is: 7,007.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,618.36 : 12,932.44 = 4,669.60 : x
  2. Step 2: Convert to fraction form
    8,618.36/12,932.44 = 4,669.60/x
  3. Step 3: Cross multiply
    8,618.36x = 12,932.44 × 4,669.60
  4. Step 4: Simplify right side
    8,618.36x = 60,389,321.82
  5. Step 5: Solve for x
    x = 60,389,321.82/8,618.36
  6. Step 6: Final answer
    x = 7,007.05

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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.