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Finding the Fourth Proportional to 613,309.70, 920,948.70 and 414,511.40

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Solution

The fourth proportional to 613,309.70, 920,948.70 and 414,511.40 is: 622,432.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,309.70 : 920,948.70 = 414,511.40 : x
  2. Step 2: Convert to fraction form
    613,309.70/920,948.70 = 414,511.40/x
  3. Step 3: Cross multiply
    613,309.70x = 920,948.70 × 414,511.40
  4. Step 4: Simplify right side
    613,309.70x = 381,743,734,965.18
  5. Step 5: Solve for x
    x = 381,743,734,965.18/613,309.70
  6. Step 6: Final answer
    x = 622,432.25

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