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Finding the Fourth Proportional to 273,060,659.40, 409,644,133.20 and 78,978,406.20

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Solution

The fourth proportional to 273,060,659.40, 409,644,133.20 and 78,978,406.20 is: 118,482,980.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,060,659.40 : 409,644,133.20 = 78,978,406.20 : x
  2. Step 2: Convert to fraction form
    273,060,659.40/409,644,133.20 = 78,978,406.20/x
  3. Step 3: Cross multiply
    273,060,659.40x = 409,644,133.20 × 78,978,406.20
  4. Step 4: Simplify right side
    273,060,659.40x = 32,353,040,749,316,508
  5. Step 5: Solve for x
    x = 32,353,040,749,316,508/273,060,659.40
  6. Step 6: Final answer
    x = 118,482,980.38

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