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Finding the Fourth Proportional to 192,706.44, 289,122.52 and 86,077.40

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Solution

The fourth proportional to 192,706.44, 289,122.52 and 86,077.40 is: 129,144.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,706.44 : 289,122.52 = 86,077.40 : x
  2. Step 2: Convert to fraction form
    192,706.44/289,122.52 = 86,077.40/x
  3. Step 3: Cross multiply
    192,706.44x = 289,122.52 × 86,077.40
  4. Step 4: Simplify right side
    192,706.44x = 24,886,914,803.05
  5. Step 5: Solve for x
    x = 24,886,914,803.05/192,706.44
  6. Step 6: Final answer
    x = 129,144.18

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1.5x scale

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.