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Finding the Fourth Proportional to 190,754.88, 263,241.72 and 105,871.92

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Solution

The fourth proportional to 190,754.88, 263,241.72 and 105,871.92 is: 146,103.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,754.88 : 263,241.72 = 105,871.92 : x
  2. Step 2: Convert to fraction form
    190,754.88/263,241.72 = 105,871.92/x
  3. Step 3: Cross multiply
    190,754.88x = 263,241.72 × 105,871.92
  4. Step 4: Simplify right side
    190,754.88x = 27,869,906,320.50
  5. Step 5: Solve for x
    x = 27,869,906,320.50/190,754.88
  6. Step 6: Final answer
    x = 146,103.24

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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.