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Finding the Fourth Proportional to 171,696.80, 257,654.55 and 100,619.30

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Solution

The fourth proportional to 171,696.80, 257,654.55 and 100,619.30 is: 150,993.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,696.80 : 257,654.55 = 100,619.30 : x
  2. Step 2: Convert to fraction form
    171,696.80/257,654.55 = 100,619.30/x
  3. Step 3: Cross multiply
    171,696.80x = 257,654.55 × 100,619.30
  4. Step 4: Simplify right side
    171,696.80x = 25,925,020,462.82
  5. Step 5: Solve for x
    x = 25,925,020,462.82/171,696.80
  6. Step 6: Final answer
    x = 150,993.03

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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.