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Finding the Fourth Proportional to 56,786.67, 85,168.16 and 19,346.45

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Solution

The fourth proportional to 56,786.67, 85,168.16 and 19,346.45 is: 29,015.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,786.67 : 85,168.16 = 19,346.45 : x
  2. Step 2: Convert to fraction form
    56,786.67/85,168.16 = 19,346.45/x
  3. Step 3: Cross multiply
    56,786.67x = 85,168.16 × 19,346.45
  4. Step 4: Simplify right side
    56,786.67x = 1,647,701,099.01
  5. Step 5: Solve for x
    x = 1,647,701,099.01/56,786.67
  6. Step 6: Final answer
    x = 29,015.63

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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.