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Finding the Fourth Proportional to 171,151.32, 256,853.10 and 81,194.32

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Solution

The fourth proportional to 171,151.32, 256,853.10 and 81,194.32 is: 121,851.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,151.32 : 256,853.10 = 81,194.32 : x
  2. Step 2: Convert to fraction form
    171,151.32/256,853.10 = 81,194.32/x
  3. Step 3: Cross multiply
    171,151.32x = 256,853.10 × 81,194.32
  4. Step 4: Simplify right side
    171,151.32x = 20,855,012,794.39
  5. Step 5: Solve for x
    x = 20,855,012,794.39/171,151.32
  6. Step 6: Final answer
    x = 121,851.31

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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.