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Finding the Fourth Proportional to 4,986.63, 7,481.64 and 3,135.58

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Solution

The fourth proportional to 4,986.63, 7,481.64 and 3,135.58 is: 4,704.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,986.63 : 7,481.64 = 3,135.58 : x
  2. Step 2: Convert to fraction form
    4,986.63/7,481.64 = 3,135.58/x
  3. Step 3: Cross multiply
    4,986.63x = 7,481.64 × 3,135.58
  4. Step 4: Simplify right side
    4,986.63x = 23,459,280.75
  5. Step 5: Solve for x
    x = 23,459,280.75/4,986.63
  6. Step 6: Final answer
    x = 4,704.44

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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.