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Finding the Fourth Proportional to 258,713.20, 388,069.80 and 195,727.60

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Solution

The fourth proportional to 258,713.20, 388,069.80 and 195,727.60 is: 293,591.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,713.20 : 388,069.80 = 195,727.60 : x
  2. Step 2: Convert to fraction form
    258,713.20/388,069.80 = 195,727.60/x
  3. Step 3: Cross multiply
    258,713.20x = 388,069.80 × 195,727.60
  4. Step 4: Simplify right side
    258,713.20x = 75,955,970,586.48
  5. Step 5: Solve for x
    x = 75,955,970,586.48/258,713.20
  6. Step 6: Final answer
    x = 293,591.40

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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.