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Finding the Fourth Proportional to 4,945.32, 7,410.54 and 2,169.36

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Solution

The fourth proportional to 4,945.32, 7,410.54 and 2,169.36 is: 3,250.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,945.32 : 7,410.54 = 2,169.36 : x
  2. Step 2: Convert to fraction form
    4,945.32/7,410.54 = 2,169.36/x
  3. Step 3: Cross multiply
    4,945.32x = 7,410.54 × 2,169.36
  4. Step 4: Simplify right side
    4,945.32x = 16,076,129.05
  5. Step 5: Solve for x
    x = 16,076,129.05/4,945.32
  6. Step 6: Final answer
    x = 3,250.78

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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.