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Finding the Fourth Proportional to 117,313.49, 161,891.57 and 65,630.02

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Solution

The fourth proportional to 117,313.49, 161,891.57 and 65,630.02 is: 90,568.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,313.49 : 161,891.57 = 65,630.02 : x
  2. Step 2: Convert to fraction form
    117,313.49/161,891.57 = 65,630.02/x
  3. Step 3: Cross multiply
    117,313.49x = 161,891.57 × 65,630.02
  4. Step 4: Simplify right side
    117,313.49x = 10,624,946,736.28
  5. Step 5: Solve for x
    x = 10,624,946,736.28/117,313.49
  6. Step 6: Final answer
    x = 90,568.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.