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Finding the Fourth Proportional to 56,607.98, 84,906.75 and 19,163.78

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Solution

The fourth proportional to 56,607.98, 84,906.75 and 19,163.78 is: 28,743.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,607.98 : 84,906.75 = 19,163.78 : x
  2. Step 2: Convert to fraction form
    56,607.98/84,906.75 = 19,163.78/x
  3. Step 3: Cross multiply
    56,607.98x = 84,906.75 × 19,163.78
  4. Step 4: Simplify right side
    56,607.98x = 1,627,133,852.98
  5. Step 5: Solve for x
    x = 1,627,133,852.98/56,607.98
  6. Step 6: Final answer
    x = 28,743.90

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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.