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Finding the Fourth Proportional to 4,057.80, 5,400.37 and 4,057.80

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Solution

The fourth proportional to 4,057.80, 5,400.37 and 4,057.80 is: 5,400.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,057.80 : 5,400.37 = 4,057.80 : x
  2. Step 2: Convert to fraction form
    4,057.80/5,400.37 = 4,057.80/x
  3. Step 3: Cross multiply
    4,057.80x = 5,400.37 × 4,057.80
  4. Step 4: Simplify right side
    4,057.80x = 21,913,621.39
  5. Step 5: Solve for x
    x = 21,913,621.39/4,057.80
  6. Step 6: Final answer
    x = 5,400.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.