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Finding the Fourth Proportional to 113,057.12, 156,019.46 and 70,640.28

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Solution

The fourth proportional to 113,057.12, 156,019.46 and 70,640.28 is: 97,483.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,057.12 : 156,019.46 = 70,640.28 : x
  2. Step 2: Convert to fraction form
    113,057.12/156,019.46 = 70,640.28/x
  3. Step 3: Cross multiply
    113,057.12x = 156,019.46 × 70,640.28
  4. Step 4: Simplify right side
    113,057.12x = 11,021,258,339.85
  5. Step 5: Solve for x
    x = 11,021,258,339.85/113,057.12
  6. Step 6: Final answer
    x = 97,483.98

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