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Finding the Fourth Proportional to 77,931.56, 116,949.12 and 28,683.56

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Solution

The fourth proportional to 77,931.56, 116,949.12 and 28,683.56 is: 43,044.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,931.56 : 116,949.12 = 28,683.56 : x
  2. Step 2: Convert to fraction form
    77,931.56/116,949.12 = 28,683.56/x
  3. Step 3: Cross multiply
    77,931.56x = 116,949.12 × 28,683.56
  4. Step 4: Simplify right side
    77,931.56x = 3,354,517,100.47
  5. Step 5: Solve for x
    x = 3,354,517,100.47/77,931.56
  6. Step 6: Final answer
    x = 43,044.40

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