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Finding the Fourth Proportional to 116,991.64, 161,448.49 and 63,276.63

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Solution

The fourth proportional to 116,991.64, 161,448.49 and 63,276.63 is: 87,321.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,991.64 : 161,448.49 = 63,276.63 : x
  2. Step 2: Convert to fraction form
    116,991.64/161,448.49 = 63,276.63/x
  3. Step 3: Cross multiply
    116,991.64x = 161,448.49 × 63,276.63
  4. Step 4: Simplify right side
    116,991.64x = 10,215,915,839.45
  5. Step 5: Solve for x
    x = 10,215,915,839.45/116,991.64
  6. Step 6: Final answer
    x = 87,321.76

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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.