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Finding the Fourth Proportional to 53,714.52, 80,559.60 and 20,422.74

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Solution

The fourth proportional to 53,714.52, 80,559.60 and 20,422.74 is: 30,629.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,714.52 : 80,559.60 = 20,422.74 : x
  2. Step 2: Convert to fraction form
    53,714.52/80,559.60 = 20,422.74/x
  3. Step 3: Cross multiply
    53,714.52x = 80,559.60 × 20,422.74
  4. Step 4: Simplify right side
    53,714.52x = 1,645,247,765.30
  5. Step 5: Solve for x
    x = 1,645,247,765.30/53,714.52
  6. Step 6: Final answer
    x = 30,629.48

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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.