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Finding the Fourth Proportional to 163,940.94, 246,079.89 and 85,033.98

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Solution

The fourth proportional to 163,940.94, 246,079.89 and 85,033.98 is: 127,638.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,940.94 : 246,079.89 = 85,033.98 : x
  2. Step 2: Convert to fraction form
    163,940.94/246,079.89 = 85,033.98/x
  3. Step 3: Cross multiply
    163,940.94x = 246,079.89 × 85,033.98
  4. Step 4: Simplify right side
    163,940.94x = 20,925,152,444.66
  5. Step 5: Solve for x
    x = 20,925,152,444.66/163,940.94
  6. Step 6: Final answer
    x = 127,638.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.