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Finding the Fourth Proportional to 288,136.88, 397,680.94 and 171,857.80

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Solution

The fourth proportional to 288,136.88, 397,680.94 and 171,857.80 is: 237,194.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,136.88 : 397,680.94 = 171,857.80 : x
  2. Step 2: Convert to fraction form
    288,136.88/397,680.94 = 171,857.80/x
  3. Step 3: Cross multiply
    288,136.88x = 397,680.94 × 171,857.80
  4. Step 4: Simplify right side
    288,136.88x = 68,344,572,162.26
  5. Step 5: Solve for x
    x = 68,344,572,162.26/288,136.88
  6. Step 6: Final answer
    x = 237,194.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.