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Finding the Fourth Proportional to 471,894.80, 707,842.20 and 139,470.80

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Solution

The fourth proportional to 471,894.80, 707,842.20 and 139,470.80 is: 209,206.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,894.80 : 707,842.20 = 139,470.80 : x
  2. Step 2: Convert to fraction form
    471,894.80/707,842.20 = 139,470.80/x
  3. Step 3: Cross multiply
    471,894.80x = 707,842.20 × 139,470.80
  4. Step 4: Simplify right side
    471,894.80x = 98,723,317,907.76
  5. Step 5: Solve for x
    x = 98,723,317,907.76/471,894.80
  6. Step 6: Final answer
    x = 209,206.20

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