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Finding the Fourth Proportional to 505,692.27, 697,853.21 and 279,337.77

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Solution

The fourth proportional to 505,692.27, 697,853.21 and 279,337.77 is: 385,484.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,692.27 : 697,853.21 = 279,337.77 : x
  2. Step 2: Convert to fraction form
    505,692.27/697,853.21 = 279,337.77/x
  3. Step 3: Cross multiply
    505,692.27x = 697,853.21 × 279,337.77
  4. Step 4: Simplify right side
    505,692.27x = 194,936,758,072.05
  5. Step 5: Solve for x
    x = 194,936,758,072.05/505,692.27
  6. Step 6: Final answer
    x = 385,484.95

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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.