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Finding the Fourth Proportional to 90,361.94, 124,698.84 and 50,077.94

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Solution

The fourth proportional to 90,361.94, 124,698.84 and 50,077.94 is: 69,107.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,361.94 : 124,698.84 = 50,077.94 : x
  2. Step 2: Convert to fraction form
    90,361.94/124,698.84 = 50,077.94/x
  3. Step 3: Cross multiply
    90,361.94x = 124,698.84 × 50,077.94
  4. Step 4: Simplify right side
    90,361.94x = 6,244,661,027.59
  5. Step 5: Solve for x
    x = 6,244,661,027.59/90,361.94
  6. Step 6: Final answer
    x = 69,107.20

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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.