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Finding the Fourth Proportional to 1,318,689.52, 1,978,074.61 and 454,115.16

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Solution

The fourth proportional to 1,318,689.52, 1,978,074.61 and 454,115.16 is: 681,186.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,689.52 : 1,978,074.61 = 454,115.16 : x
  2. Step 2: Convert to fraction form
    1,318,689.52/1,978,074.61 = 454,115.16/x
  3. Step 3: Cross multiply
    1,318,689.52x = 1,978,074.61 × 454,115.16
  4. Step 4: Simplify right side
    1,318,689.52x = 898,273,666,876.80
  5. Step 5: Solve for x
    x = 898,273,666,876.80/1,318,689.52
  6. Step 6: Final answer
    x = 681,186.63

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