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Finding the Fourth Proportional to 28,662,570.80, 42,993,856.20 and 17,297,169.20

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Solution

The fourth proportional to 28,662,570.80, 42,993,856.20 and 17,297,169.20 is: 25,945,753.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,662,570.80 : 42,993,856.20 = 17,297,169.20 : x
  2. Step 2: Convert to fraction form
    28,662,570.80/42,993,856.20 = 17,297,169.20/x
  3. Step 3: Cross multiply
    28,662,570.80x = 42,993,856.20 × 17,297,169.20
  4. Step 4: Simplify right side
    28,662,570.80x = 743,672,005,251,869
  5. Step 5: Solve for x
    x = 743,672,005,251,869/28,662,570.80
  6. Step 6: Final answer
    x = 25,945,753.80

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