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Finding the Fourth Proportional to 4,936.18, 7,405.18 and 1,649.60

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Solution

The fourth proportional to 4,936.18, 7,405.18 and 1,649.60 is: 2,474.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,936.18 : 7,405.18 = 1,649.60 : x
  2. Step 2: Convert to fraction form
    4,936.18/7,405.18 = 1,649.60/x
  3. Step 3: Cross multiply
    4,936.18x = 7,405.18 × 1,649.60
  4. Step 4: Simplify right side
    4,936.18x = 12,215,584.93
  5. Step 5: Solve for x
    x = 12,215,584.93/4,936.18
  6. Step 6: Final answer
    x = 2,474.70

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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.