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Finding the Fourth Proportional to 35,819.48, 53,728.58 and 12,445.31

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Solution

The fourth proportional to 35,819.48, 53,728.58 and 12,445.31 is: 18,667.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,819.48 : 53,728.58 = 12,445.31 : x
  2. Step 2: Convert to fraction form
    35,819.48/53,728.58 = 12,445.31/x
  3. Step 3: Cross multiply
    35,819.48x = 53,728.58 × 12,445.31
  4. Step 4: Simplify right side
    35,819.48x = 668,668,999.39
  5. Step 5: Solve for x
    x = 668,668,999.39/35,819.48
  6. Step 6: Final answer
    x = 18,667.75

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