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Finding the Fourth Proportional to 86,968,978.20, 120,010,055.76 and 51,199,741.49

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Solution

The fourth proportional to 86,968,978.20, 120,010,055.76 and 51,199,741.49 is: 70,651,443.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,968,978.20 : 120,010,055.76 = 51,199,741.49 : x
  2. Step 2: Convert to fraction form
    86,968,978.20/120,010,055.76 = 51,199,741.49/x
  3. Step 3: Cross multiply
    86,968,978.20x = 120,010,055.76 × 51,199,741.49
  4. Step 4: Simplify right side
    86,968,978.20x = 6,144,483,830,512,435
  5. Step 5: Solve for x
    x = 6,144,483,830,512,435/86,968,978.20
  6. Step 6: Final answer
    x = 70,651,443.28

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