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Finding the Fourth Proportional to 69,163.87, 95,490.28 and 56,447.43

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Solution

The fourth proportional to 69,163.87, 95,490.28 and 56,447.43 is: 77,933.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,163.87 : 95,490.28 = 56,447.43 : x
  2. Step 2: Convert to fraction form
    69,163.87/95,490.28 = 56,447.43/x
  3. Step 3: Cross multiply
    69,163.87x = 95,490.28 × 56,447.43
  4. Step 4: Simplify right side
    69,163.87x = 5,390,180,754.86
  5. Step 5: Solve for x
    x = 5,390,180,754.86/69,163.87
  6. Step 6: Final answer
    x = 77,933.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.