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Finding the Fourth Proportional to 186,868.80, 280,136.54 and 68,512.56

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Solution

The fourth proportional to 186,868.80, 280,136.54 and 68,512.56 is: 102,707.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,868.80 : 280,136.54 = 68,512.56 : x
  2. Step 2: Convert to fraction form
    186,868.80/280,136.54 = 68,512.56/x
  3. Step 3: Cross multiply
    186,868.80x = 280,136.54 × 68,512.56
  4. Step 4: Simplify right side
    186,868.80x = 19,192,871,504.94
  5. Step 5: Solve for x
    x = 19,192,871,504.94/186,868.80
  6. Step 6: Final answer
    x = 102,707.74

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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.