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Finding the Fourth Proportional to 412,661.41, 618,994.17 and 187,864.58

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Solution

The fourth proportional to 412,661.41, 618,994.17 and 187,864.58 is: 281,797.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,661.41 : 618,994.17 = 187,864.58 : x
  2. Step 2: Convert to fraction form
    412,661.41/618,994.17 = 187,864.58/x
  3. Step 3: Cross multiply
    412,661.41x = 618,994.17 × 187,864.58
  4. Step 4: Simplify right side
    412,661.41x = 116,287,079,769.50
  5. Step 5: Solve for x
    x = 116,287,079,769.50/412,661.41
  6. Step 6: Final answer
    x = 281,797.81

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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.