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Finding the Fourth Proportional to 167,022.78, 230,491.08 and 91,571.28

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Solution

The fourth proportional to 167,022.78, 230,491.08 and 91,571.28 is: 126,368.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,022.78 : 230,491.08 = 91,571.28 : x
  2. Step 2: Convert to fraction form
    167,022.78/230,491.08 = 91,571.28/x
  3. Step 3: Cross multiply
    167,022.78x = 230,491.08 × 91,571.28
  4. Step 4: Simplify right side
    167,022.78x = 21,106,363,224.18
  5. Step 5: Solve for x
    x = 21,106,363,224.18/167,022.78
  6. Step 6: Final answer
    x = 126,368.17

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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.