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Finding the Fourth Proportional to 53,995.48, 80,993.94 and 18,936.16

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Solution

The fourth proportional to 53,995.48, 80,993.94 and 18,936.16 is: 28,404.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,995.48 : 80,993.94 = 18,936.16 : x
  2. Step 2: Convert to fraction form
    53,995.48/80,993.94 = 18,936.16/x
  3. Step 3: Cross multiply
    53,995.48x = 80,993.94 × 18,936.16
  4. Step 4: Simplify right side
    53,995.48x = 1,533,714,206.87
  5. Step 5: Solve for x
    x = 1,533,714,206.87/53,995.48
  6. Step 6: Final answer
    x = 28,404.49

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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.