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Finding the Fourth Proportional to 11,912.76, 17,850.31 and 4,406.01

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Solution

The fourth proportional to 11,912.76, 17,850.31 and 4,406.01 is: 6,602.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,912.76 : 17,850.31 = 4,406.01 : x
  2. Step 2: Convert to fraction form
    11,912.76/17,850.31 = 4,406.01/x
  3. Step 3: Cross multiply
    11,912.76x = 17,850.31 × 4,406.01
  4. Step 4: Simplify right side
    11,912.76x = 78,648,644.36
  5. Step 5: Solve for x
    x = 78,648,644.36/11,912.76
  6. Step 6: Final answer
    x = 6,602.05

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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.