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Finding the Fourth Proportional to 36,699.99, 50,649.26 and 20,785.47

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Solution

The fourth proportional to 36,699.99, 50,649.26 and 20,785.47 is: 28,685.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,699.99 : 50,649.26 = 20,785.47 : x
  2. Step 2: Convert to fraction form
    36,699.99/50,649.26 = 20,785.47/x
  3. Step 3: Cross multiply
    36,699.99x = 50,649.26 × 20,785.47
  4. Step 4: Simplify right side
    36,699.99x = 1,052,768,570.32
  5. Step 5: Solve for x
    x = 1,052,768,570.32/36,699.99
  6. Step 6: Final answer
    x = 28,685.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.