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Finding the Fourth Proportional to 70,638.60, 105,810.70 and 33,230.60

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Solution

The fourth proportional to 70,638.60, 105,810.70 and 33,230.60 is: 49,776.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,638.60 : 105,810.70 = 33,230.60 : x
  2. Step 2: Convert to fraction form
    70,638.60/105,810.70 = 33,230.60/x
  3. Step 3: Cross multiply
    70,638.60x = 105,810.70 × 33,230.60
  4. Step 4: Simplify right side
    70,638.60x = 3,516,153,047.42
  5. Step 5: Solve for x
    x = 3,516,153,047.42/70,638.60
  6. Step 6: Final answer
    x = 49,776.65

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