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Finding the Fourth Proportional to 11,843,391.80, 17,765,087.70 and 11,843,391.80

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Solution

The fourth proportional to 11,843,391.80, 17,765,087.70 and 11,843,391.80 is: 17,765,087.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,843,391.80 : 17,765,087.70 = 11,843,391.80 : x
  2. Step 2: Convert to fraction form
    11,843,391.80/17,765,087.70 = 11,843,391.80/x
  3. Step 3: Cross multiply
    11,843,391.80x = 17,765,087.70 × 11,843,391.80
  4. Step 4: Simplify right side
    11,843,391.80x = 210,398,893,992,460.88
  5. Step 5: Solve for x
    x = 210,398,893,992,460.88/11,843,391.80
  6. Step 6: Final answer
    x = 17,765,087.70

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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.