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Finding the Fourth Proportional to 109,172.61, 150,650.10 and 61,416.81

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Solution

The fourth proportional to 109,172.61, 150,650.10 and 61,416.81 is: 84,750.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,172.61 : 150,650.10 = 61,416.81 : x
  2. Step 2: Convert to fraction form
    109,172.61/150,650.10 = 61,416.81/x
  3. Step 3: Cross multiply
    109,172.61x = 150,650.10 × 61,416.81
  4. Step 4: Simplify right side
    109,172.61x = 9,252,448,568.18
  5. Step 5: Solve for x
    x = 9,252,448,568.18/109,172.61
  6. Step 6: Final answer
    x = 84,750.64

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