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Finding the Fourth Proportional to 171,769.44, 257,728.32 and 92,939.28

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Solution

The fourth proportional to 171,769.44, 257,728.32 and 92,939.28 is: 139,449.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,769.44 : 257,728.32 = 92,939.28 : x
  2. Step 2: Convert to fraction form
    171,769.44/257,728.32 = 92,939.28/x
  3. Step 3: Cross multiply
    171,769.44x = 257,728.32 × 92,939.28
  4. Step 4: Simplify right side
    171,769.44x = 23,953,084,496.41
  5. Step 5: Solve for x
    x = 23,953,084,496.41/171,769.44
  6. Step 6: Final answer
    x = 139,449.05

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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.