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Finding the Fourth Proportional to 19,809,969.85, 27,677,270.75 and 19,809,969.85

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Solution

The fourth proportional to 19,809,969.85, 27,677,270.75 and 19,809,969.85 is: 27,677,270.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,809,969.85 : 27,677,270.75 = 19,809,969.85 : x
  2. Step 2: Convert to fraction form
    19,809,969.85/27,677,270.75 = 19,809,969.85/x
  3. Step 3: Cross multiply
    19,809,969.85x = 27,677,270.75 × 19,809,969.85
  4. Step 4: Simplify right side
    19,809,969.85x = 548,285,899,087,786.94
  5. Step 5: Solve for x
    x = 548,285,899,087,786.94/19,809,969.85
  6. Step 6: Final answer
    x = 27,677,270.75

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.