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Finding the Fourth Proportional to 171,911.20, 257,866.80 and 169,286.80

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Solution

The fourth proportional to 171,911.20, 257,866.80 and 169,286.80 is: 253,930.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,911.20 : 257,866.80 = 169,286.80 : x
  2. Step 2: Convert to fraction form
    171,911.20/257,866.80 = 169,286.80/x
  3. Step 3: Cross multiply
    171,911.20x = 257,866.80 × 169,286.80
  4. Step 4: Simplify right side
    171,911.20x = 43,653,445,398.24
  5. Step 5: Solve for x
    x = 43,653,445,398.24/171,911.20
  6. Step 6: Final answer
    x = 253,930.20

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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.