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Finding the Fourth Proportional to 163,639.82, 225,821.52 and 92,018.31

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Solution

The fourth proportional to 163,639.82, 225,821.52 and 92,018.31 is: 126,984.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,639.82 : 225,821.52 = 92,018.31 : x
  2. Step 2: Convert to fraction form
    163,639.82/225,821.52 = 92,018.31/x
  3. Step 3: Cross multiply
    163,639.82x = 225,821.52 × 92,018.31
  4. Step 4: Simplify right side
    163,639.82x = 20,779,714,632.03
  5. Step 5: Solve for x
    x = 20,779,714,632.03/163,639.82
  6. Step 6: Final answer
    x = 126,984.47

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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.