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Finding the Fourth Proportional to 73,774.66, 110,629.35 and 21,171.94

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Solution

The fourth proportional to 73,774.66, 110,629.35 and 21,171.94 is: 31,748.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,774.66 : 110,629.35 = 21,171.94 : x
  2. Step 2: Convert to fraction form
    73,774.66/110,629.35 = 21,171.94/x
  3. Step 3: Cross multiply
    73,774.66x = 110,629.35 × 21,171.94
  4. Step 4: Simplify right side
    73,774.66x = 2,342,237,960.44
  5. Step 5: Solve for x
    x = 2,342,237,960.44/73,774.66
  6. Step 6: Final answer
    x = 31,748.54

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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.