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Finding the Fourth Proportional to 78,597.60, 117,664.74 and 51,894.60

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Solution

The fourth proportional to 78,597.60, 117,664.74 and 51,894.60 is: 77,688.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,597.60 : 117,664.74 = 51,894.60 : x
  2. Step 2: Convert to fraction form
    78,597.60/117,664.74 = 51,894.60/x
  3. Step 3: Cross multiply
    78,597.60x = 117,664.74 × 51,894.60
  4. Step 4: Simplify right side
    78,597.60x = 6,106,164,616.40
  5. Step 5: Solve for x
    x = 6,106,164,616.40/78,597.60
  6. Step 6: Final answer
    x = 77,688.94

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