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Finding the Fourth Proportional to 64,155.97, 96,249.64 and 45,217.54

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Solution

The fourth proportional to 64,155.97, 96,249.64 and 45,217.54 is: 67,837.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,155.97 : 96,249.64 = 45,217.54 : x
  2. Step 2: Convert to fraction form
    64,155.97/96,249.64 = 45,217.54/x
  3. Step 3: Cross multiply
    64,155.97x = 96,249.64 × 45,217.54
  4. Step 4: Simplify right side
    64,155.97x = 4,352,171,946.69
  5. Step 5: Solve for x
    x = 4,352,171,946.69/64,155.97
  6. Step 6: Final answer
    x = 67,837.36

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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.