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Finding the Fourth Proportional to 171,146.19, 256,845.41 and 81,189.18

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Solution

The fourth proportional to 171,146.19, 256,845.41 and 81,189.18 is: 121,843.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,146.19 : 256,845.41 = 81,189.18 : x
  2. Step 2: Convert to fraction form
    171,146.19/256,845.41 = 81,189.18/x
  3. Step 3: Cross multiply
    171,146.19x = 256,845.41 × 81,189.18
  4. Step 4: Simplify right side
    171,146.19x = 20,853,068,224.66
  5. Step 5: Solve for x
    x = 20,853,068,224.66/171,146.19
  6. Step 6: Final answer
    x = 121,843.60

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1.5x scale

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.