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Finding the Fourth Proportional to 71,128.17, 106,715.05 and 49,803.10

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Solution

The fourth proportional to 71,128.17, 106,715.05 and 49,803.10 is: 74,720.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,128.17 : 106,715.05 = 49,803.10 : x
  2. Step 2: Convert to fraction form
    71,128.17/106,715.05 = 49,803.10/x
  3. Step 3: Cross multiply
    71,128.17x = 106,715.05 × 49,803.10
  4. Step 4: Simplify right side
    71,128.17x = 5,314,739,915.36
  5. Step 5: Solve for x
    x = 5,314,739,915.36/71,128.17
  6. Step 6: Final answer
    x = 74,720.61

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