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Finding the Fourth Proportional to 456,661.40, 684,992.10 and 207,343.40

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Solution

The fourth proportional to 456,661.40, 684,992.10 and 207,343.40 is: 311,015.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,661.40 : 684,992.10 = 207,343.40 : x
  2. Step 2: Convert to fraction form
    456,661.40/684,992.10 = 207,343.40/x
  3. Step 3: Cross multiply
    456,661.40x = 684,992.10 × 207,343.40
  4. Step 4: Simplify right side
    456,661.40x = 142,028,590,987.14
  5. Step 5: Solve for x
    x = 142,028,590,987.14/456,661.40
  6. Step 6: Final answer
    x = 311,015.10

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