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Finding the Fourth Proportional to 1,961,327.20, 2,942,020.32 and 746,970.95

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Solution

The fourth proportional to 1,961,327.20, 2,942,020.32 and 746,970.95 is: 1,120,467.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961,327.20 : 2,942,020.32 = 746,970.95 : x
  2. Step 2: Convert to fraction form
    1,961,327.20/2,942,020.32 = 746,970.95/x
  3. Step 3: Cross multiply
    1,961,327.20x = 2,942,020.32 × 746,970.95
  4. Step 4: Simplify right side
    1,961,327.20x = 2,197,603,713,349.70
  5. Step 5: Solve for x
    x = 2,197,603,713,349.70/1,961,327.20
  6. Step 6: Final answer
    x = 1,120,467.67

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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.