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Finding the Fourth Proportional to 36,698.47, 50,644.55 and 20,786.22

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Solution

The fourth proportional to 36,698.47, 50,644.55 and 20,786.22 is: 28,685.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,698.47 : 50,644.55 = 20,786.22 : x
  2. Step 2: Convert to fraction form
    36,698.47/50,644.55 = 20,786.22/x
  3. Step 3: Cross multiply
    36,698.47x = 50,644.55 × 20,786.22
  4. Step 4: Simplify right side
    36,698.47x = 1,052,708,810.07
  5. Step 5: Solve for x
    x = 1,052,708,810.07/36,698.47
  6. Step 6: Final answer
    x = 28,685.36

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Find fourth proportional to 36,699.47, 50,645.93 and 20,787.22
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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.