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Finding the Fourth Proportional to 263,443.80, 394,013.70 and 235,565.40

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Solution

The fourth proportional to 263,443.80, 394,013.70 and 235,565.40 is: 352,318.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,443.80 : 394,013.70 = 235,565.40 : x
  2. Step 2: Convert to fraction form
    263,443.80/394,013.70 = 235,565.40/x
  3. Step 3: Cross multiply
    263,443.80x = 394,013.70 × 235,565.40
  4. Step 4: Simplify right side
    263,443.80x = 92,815,994,845.98
  5. Step 5: Solve for x
    x = 92,815,994,845.98/263,443.80
  6. Step 6: Final answer
    x = 352,318.01

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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.