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Finding the Fourth Proportional to 56,608.98, 84,908.25 and 19,164.78

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Solution

The fourth proportional to 56,608.98, 84,908.25 and 19,164.78 is: 28,745.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,608.98 : 84,908.25 = 19,164.78 : x
  2. Step 2: Convert to fraction form
    56,608.98/84,908.25 = 19,164.78/x
  3. Step 3: Cross multiply
    56,608.98x = 84,908.25 × 19,164.78
  4. Step 4: Simplify right side
    56,608.98x = 1,627,247,931.44
  5. Step 5: Solve for x
    x = 1,627,247,931.44/56,608.98
  6. Step 6: Final answer
    x = 28,745.40

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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.