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Finding the Fourth Proportional to 538,858.80, 806,905.80 and 513,975.60

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Solution

The fourth proportional to 538,858.80, 806,905.80 and 513,975.60 is: 769,644.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,858.80 : 806,905.80 = 513,975.60 : x
  2. Step 2: Convert to fraction form
    538,858.80/806,905.80 = 513,975.60/x
  3. Step 3: Cross multiply
    538,858.80x = 806,905.80 × 513,975.60
  4. Step 4: Simplify right side
    538,858.80x = 414,729,892,698.48
  5. Step 5: Solve for x
    x = 414,729,892,698.48/538,858.80
  6. Step 6: Final answer
    x = 769,644.84

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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.