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Finding the Fourth Proportional to 63,039.42, 86,992.74 and 34,745.22

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Solution

The fourth proportional to 63,039.42, 86,992.74 and 34,745.22 is: 47,947.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,039.42 : 86,992.74 = 34,745.22 : x
  2. Step 2: Convert to fraction form
    63,039.42/86,992.74 = 34,745.22/x
  3. Step 3: Cross multiply
    63,039.42x = 86,992.74 × 34,745.22
  4. Step 4: Simplify right side
    63,039.42x = 3,022,581,889.70
  5. Step 5: Solve for x
    x = 3,022,581,889.70/63,039.42
  6. Step 6: Final answer
    x = 47,947.49

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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.