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Finding the Fourth Proportional to 171,634.40, 257,743.20 and 127,311.20

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Solution

The fourth proportional to 171,634.40, 257,743.20 and 127,311.20 is: 191,183.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,634.40 : 257,743.20 = 127,311.20 : x
  2. Step 2: Convert to fraction form
    171,634.40/257,743.20 = 127,311.20/x
  3. Step 3: Cross multiply
    171,634.40x = 257,743.20 × 127,311.20
  4. Step 4: Simplify right side
    171,634.40x = 32,813,596,083.84
  5. Step 5: Solve for x
    x = 32,813,596,083.84/171,634.40
  6. Step 6: Final answer
    x = 191,183.10

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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.