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Finding the Fourth Proportional to 7,978,175,139.60, 11,967,262,709.40 and 7,978,175,139.60

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Solution

The fourth proportional to 7,978,175,139.60, 11,967,262,709.40 and 7,978,175,139.60 is: 11,967,262,709.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,978,175,139.60 : 11,967,262,709.40 = 7,978,175,139.60 : x
  2. Step 2: Convert to fraction form
    7,978,175,139.60/11,967,262,709.40 = 7,978,175,139.60/x
  3. Step 3: Cross multiply
    7,978,175,139.60x = 11,967,262,709.40 × 7,978,175,139.60
  4. Step 4: Simplify right side
    7,978,175,139.60x = 95,476,917,837,197,213,696
  5. Step 5: Solve for x
    x = 95,476,917,837,197,213,696/7,978,175,139.60
  6. Step 6: Final answer
    x = 11,967,262,709.40

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