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Finding the Fourth Proportional to 398,783.36, 598,170.72 and 230,556.80

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Solution

The fourth proportional to 398,783.36, 598,170.72 and 230,556.80 is: 345,832.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,783.36 : 598,170.72 = 230,556.80 : x
  2. Step 2: Convert to fraction form
    398,783.36/598,170.72 = 230,556.80/x
  3. Step 3: Cross multiply
    398,783.36x = 598,170.72 × 230,556.80
  4. Step 4: Simplify right side
    398,783.36x = 137,912,327,056.90
  5. Step 5: Solve for x
    x = 137,912,327,056.90/398,783.36
  6. Step 6: Final answer
    x = 345,832.70

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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.