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Finding the Fourth Proportional to 163,661.92, 225,835.09 and 92,040.40

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Solution

The fourth proportional to 163,661.92, 225,835.09 and 92,040.40 is: 127,005.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,661.92 : 225,835.09 = 92,040.40 : x
  2. Step 2: Convert to fraction form
    163,661.92/225,835.09 = 92,040.40/x
  3. Step 3: Cross multiply
    163,661.92x = 225,835.09 × 92,040.40
  4. Step 4: Simplify right side
    163,661.92x = 20,785,952,069.83
  5. Step 5: Solve for x
    x = 20,785,952,069.83/163,661.92
  6. Step 6: Final answer
    x = 127,005.43

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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.