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Finding the Fourth Proportional to 104,076.92, 143,629.63 and 63,782.90

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Solution

The fourth proportional to 104,076.92, 143,629.63 and 63,782.90 is: 88,022.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,076.92 : 143,629.63 = 63,782.90 : x
  2. Step 2: Convert to fraction form
    104,076.92/143,629.63 = 63,782.90/x
  3. Step 3: Cross multiply
    104,076.92x = 143,629.63 × 63,782.90
  4. Step 4: Simplify right side
    104,076.92x = 9,161,114,327.33
  5. Step 5: Solve for x
    x = 9,161,114,327.33/104,076.92
  6. Step 6: Final answer
    x = 88,022.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.