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Finding the Fourth Proportional to 978,775,383,280.40, 1,468,163,074,920.60 and 978,775,383,280.40

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Solution

The fourth proportional to 978,775,383,280.40, 1,468,163,074,920.60 and 978,775,383,280.40 is: 1,468,163,074,920.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,775,383,280.40 : 1,468,163,074,920.60 = 978,775,383,280.40 : x
  2. Step 2: Convert to fraction form
    978,775,383,280.40/1,468,163,074,920.60 = 978,775,383,280.40/x
  3. Step 3: Cross multiply
    978,775,383,280.40x = 1,468,163,074,920.60 × 978,775,383,280.40
  4. Step 4: Simplify right side
    978,775,383,280.40x = 1,437,001,876,373,540,976,984,064
  5. Step 5: Solve for x
    x = 1,437,001,876,373,540,976,984,064/978,775,383,280.40
  6. Step 6: Final answer
    x = 1,468,163,074,920.60

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