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Finding the Fourth Proportional to 73,907.54, 110,845.11 and 21,305.60

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Solution

The fourth proportional to 73,907.54, 110,845.11 and 21,305.60 is: 31,953.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,907.54 : 110,845.11 = 21,305.60 : x
  2. Step 2: Convert to fraction form
    73,907.54/110,845.11 = 21,305.60/x
  3. Step 3: Cross multiply
    73,907.54x = 110,845.11 × 21,305.60
  4. Step 4: Simplify right side
    73,907.54x = 2,361,621,575.62
  5. Step 5: Solve for x
    x = 2,361,621,575.62/73,907.54
  6. Step 6: Final answer
    x = 31,953.73

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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.