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Finding the Fourth Proportional to 171,469.60, 257,244.92 and 71,574.28

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Solution

The fourth proportional to 171,469.60, 257,244.92 and 71,574.28 is: 107,378.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,469.60 : 257,244.92 = 71,574.28 : x
  2. Step 2: Convert to fraction form
    171,469.60/257,244.92 = 71,574.28/x
  3. Step 3: Cross multiply
    171,469.60x = 257,244.92 × 71,574.28
  4. Step 4: Simplify right side
    171,469.60x = 18,412,119,932.66
  5. Step 5: Solve for x
    x = 18,412,119,932.66/171,469.60
  6. Step 6: Final answer
    x = 107,378.33

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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.