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Finding the Fourth Proportional to 64,495.89, 96,629.27 and 55,039.95

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Solution

The fourth proportional to 64,495.89, 96,629.27 and 55,039.95 is: 82,462.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,495.89 : 96,629.27 = 55,039.95 : x
  2. Step 2: Convert to fraction form
    64,495.89/96,629.27 = 55,039.95/x
  3. Step 3: Cross multiply
    64,495.89x = 96,629.27 × 55,039.95
  4. Step 4: Simplify right side
    64,495.89x = 5,318,469,914.14
  5. Step 5: Solve for x
    x = 5,318,469,914.14/64,495.89
  6. Step 6: Final answer
    x = 82,462.15

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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.