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Finding the Fourth Proportional to 1,400,765.82, 1,946,107.01 and 1,383,969.66

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Solution

The fourth proportional to 1,400,765.82, 1,946,107.01 and 1,383,969.66 is: 1,922,771.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400,765.82 : 1,946,107.01 = 1,383,969.66 : x
  2. Step 2: Convert to fraction form
    1,400,765.82/1,946,107.01 = 1,383,969.66/x
  3. Step 3: Cross multiply
    1,400,765.82x = 1,946,107.01 × 1,383,969.66
  4. Step 4: Simplify right side
    1,400,765.82x = 2,693,353,050,033.47
  5. Step 5: Solve for x
    x = 2,693,353,050,033.47/1,400,765.82
  6. Step 6: Final answer
    x = 1,922,771.82

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.