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Finding the Fourth Proportional to 171,680.87, 256,477.01 and 111,217.15

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Solution

The fourth proportional to 171,680.87, 256,477.01 and 111,217.15 is: 166,149.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,680.87 : 256,477.01 = 111,217.15 : x
  2. Step 2: Convert to fraction form
    171,680.87/256,477.01 = 111,217.15/x
  3. Step 3: Cross multiply
    171,680.87x = 256,477.01 × 111,217.15
  4. Step 4: Simplify right side
    171,680.87x = 28,524,642,170.03
  5. Step 5: Solve for x
    x = 28,524,642,170.03/171,680.87
  6. Step 6: Final answer
    x = 166,149.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.