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Finding the Fourth Proportional to 64,578.82, 96,687.78 and 34,890.28

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Solution

The fourth proportional to 64,578.82, 96,687.78 and 34,890.28 is: 52,237.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,578.82 : 96,687.78 = 34,890.28 : x
  2. Step 2: Convert to fraction form
    64,578.82/96,687.78 = 34,890.28/x
  3. Step 3: Cross multiply
    64,578.82x = 96,687.78 × 34,890.28
  4. Step 4: Simplify right side
    64,578.82x = 3,373,463,716.78
  5. Step 5: Solve for x
    x = 3,373,463,716.78/64,578.82
  6. Step 6: Final answer
    x = 52,237.93

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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.