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Finding the Fourth Proportional to 2,690,692.80, 4,029,040.80 and 1,738,910.40

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Solution

The fourth proportional to 2,690,692.80, 4,029,040.80 and 1,738,910.40 is: 2,603,842.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690,692.80 : 4,029,040.80 = 1,738,910.40 : x
  2. Step 2: Convert to fraction form
    2,690,692.80/4,029,040.80 = 1,738,910.40/x
  3. Step 3: Cross multiply
    2,690,692.80x = 4,029,040.80 × 1,738,910.40
  4. Step 4: Simplify right side
    2,690,692.80x = 7,006,140,949,144.32
  5. Step 5: Solve for x
    x = 7,006,140,949,144.32/2,690,692.80
  6. Step 6: Final answer
    x = 2,603,842.75

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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.