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Finding the Fourth Proportional to 57,469.60, 86,201.64 and 20,028.16

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Solution

The fourth proportional to 57,469.60, 86,201.64 and 20,028.16 is: 30,041.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,469.60 : 86,201.64 = 20,028.16 : x
  2. Step 2: Convert to fraction form
    57,469.60/86,201.64 = 20,028.16/x
  3. Step 3: Cross multiply
    57,469.60x = 86,201.64 × 20,028.16
  4. Step 4: Simplify right side
    57,469.60x = 1,726,460,238.18
  5. Step 5: Solve for x
    x = 1,726,460,238.18/57,469.60
  6. Step 6: Final answer
    x = 30,041.28

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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.