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Finding the Fourth Proportional to 511,850.20, 768,005.70 and 245,507.80

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Solution

The fourth proportional to 511,850.20, 768,005.70 and 245,507.80 is: 368,372.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,850.20 : 768,005.70 = 245,507.80 : x
  2. Step 2: Convert to fraction form
    511,850.20/768,005.70 = 245,507.80/x
  3. Step 3: Cross multiply
    511,850.20x = 768,005.70 × 245,507.80
  4. Step 4: Simplify right side
    511,850.20x = 188,551,389,794.46
  5. Step 5: Solve for x
    x = 188,551,389,794.46/511,850.20
  6. Step 6: Final answer
    x = 368,372.21

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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.