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Finding the Fourth Proportional to 57,799.20, 86,698.80 and 53,997.60

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Solution

The fourth proportional to 57,799.20, 86,698.80 and 53,997.60 is: 80,996.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,799.20 : 86,698.80 = 53,997.60 : x
  2. Step 2: Convert to fraction form
    57,799.20/86,698.80 = 53,997.60/x
  3. Step 3: Cross multiply
    57,799.20x = 86,698.80 × 53,997.60
  4. Step 4: Simplify right side
    57,799.20x = 4,681,527,122.88
  5. Step 5: Solve for x
    x = 4,681,527,122.88/57,799.20
  6. Step 6: Final answer
    x = 80,996.40

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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.