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Finding the Fourth Proportional to 1,419,797.71, 1,961,393.57 and 1,228,478.95

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Solution

The fourth proportional to 1,419,797.71, 1,961,393.57 and 1,228,478.95 is: 1,697,094.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419,797.71 : 1,961,393.57 = 1,228,478.95 : x
  2. Step 2: Convert to fraction form
    1,419,797.71/1,961,393.57 = 1,228,478.95/x
  3. Step 3: Cross multiply
    1,419,797.71x = 1,961,393.57 × 1,228,478.95
  4. Step 4: Simplify right side
    1,419,797.71x = 2,409,530,713,410.35
  5. Step 5: Solve for x
    x = 2,409,530,713,410.35/1,419,797.71
  6. Step 6: Final answer
    x = 1,697,094.38

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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.