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Finding the Fourth Proportional to 405,218.60, 606,953.10 and 335,234.60

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Solution

The fourth proportional to 405,218.60, 606,953.10 and 335,234.60 is: 502,128.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,218.60 : 606,953.10 = 335,234.60 : x
  2. Step 2: Convert to fraction form
    405,218.60/606,953.10 = 335,234.60/x
  3. Step 3: Cross multiply
    405,218.60x = 606,953.10 × 335,234.60
  4. Step 4: Simplify right side
    405,218.60x = 203,471,679,697.26
  5. Step 5: Solve for x
    x = 203,471,679,697.26/405,218.60
  6. Step 6: Final answer
    x = 502,128.18

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