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Finding the Fourth Proportional to 74,390.40, 111,585.60 and 70,934.40

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Solution

The fourth proportional to 74,390.40, 111,585.60 and 70,934.40 is: 106,401.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,390.40 : 111,585.60 = 70,934.40 : x
  2. Step 2: Convert to fraction form
    74,390.40/111,585.60 = 70,934.40/x
  3. Step 3: Cross multiply
    74,390.40x = 111,585.60 × 70,934.40
  4. Step 4: Simplify right side
    74,390.40x = 7,915,257,584.64
  5. Step 5: Solve for x
    x = 7,915,257,584.64/74,390.40
  6. Step 6: Final answer
    x = 106,401.60

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