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Finding the Fourth Proportional to 19,338,676.80, 28,976,522.40 and 14,236,843.20

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Solution

The fourth proportional to 19,338,676.80, 28,976,522.40 and 14,236,843.20 is: 21,332,080.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,338,676.80 : 28,976,522.40 = 14,236,843.20 : x
  2. Step 2: Convert to fraction form
    19,338,676.80/28,976,522.40 = 14,236,843.20/x
  3. Step 3: Cross multiply
    19,338,676.80x = 28,976,522.40 × 14,236,843.20
  4. Step 4: Simplify right side
    19,338,676.80x = 412,534,205,890,087.62
  5. Step 5: Solve for x
    x = 412,534,205,890,087.62/19,338,676.80
  6. Step 6: Final answer
    x = 21,332,080.27

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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.