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Finding the Fourth Proportional to 12,481,693.60, 18,694,546.80 and 12,481,693.60

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Solution

The fourth proportional to 12,481,693.60, 18,694,546.80 and 12,481,693.60 is: 18,694,546.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,481,693.60 : 18,694,546.80 = 12,481,693.60 : x
  2. Step 2: Convert to fraction form
    12,481,693.60/18,694,546.80 = 12,481,693.60/x
  3. Step 3: Cross multiply
    12,481,693.60x = 18,694,546.80 × 12,481,693.60
  4. Step 4: Simplify right side
    12,481,693.60x = 233,339,605,148,460.47
  5. Step 5: Solve for x
    x = 233,339,605,148,460.47/12,481,693.60
  6. Step 6: Final answer
    x = 18,694,546.80

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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.