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Finding the Fourth Proportional to 418,701,758.88, 628,146,304.79 and 127,591,665.10

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Solution

The fourth proportional to 418,701,758.88, 628,146,304.79 and 127,591,665.10 is: 191,416,040.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,701,758.88 : 628,146,304.79 = 127,591,665.10 : x
  2. Step 2: Convert to fraction form
    418,701,758.88/628,146,304.79 = 127,591,665.10/x
  3. Step 3: Cross multiply
    418,701,758.88x = 628,146,304.79 × 127,591,665.10
  4. Step 4: Simplify right side
    418,701,758.88x = 80,146,232,956,138,576
  5. Step 5: Solve for x
    x = 80,146,232,956,138,576/418,701,758.88
  6. Step 6: Final answer
    x = 191,416,040.79

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