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Finding the Fourth Proportional to 276,091.20, 414,136.80 and 164,116.80

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Solution

The fourth proportional to 276,091.20, 414,136.80 and 164,116.80 is: 246,175.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,091.20 : 414,136.80 = 164,116.80 : x
  2. Step 2: Convert to fraction form
    276,091.20/414,136.80 = 164,116.80/x
  3. Step 3: Cross multiply
    276,091.20x = 414,136.80 × 164,116.80
  4. Step 4: Simplify right side
    276,091.20x = 67,966,806,378.24
  5. Step 5: Solve for x
    x = 67,966,806,378.24/276,091.20
  6. Step 6: Final answer
    x = 246,175.20

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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.