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Finding the Fourth Proportional to 37,449.20, 51,679.90 and 20,682.20

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Solution

The fourth proportional to 37,449.20, 51,679.90 and 20,682.20 is: 28,541.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,449.20 : 51,679.90 = 20,682.20 : x
  2. Step 2: Convert to fraction form
    37,449.20/51,679.90 = 20,682.20/x
  3. Step 3: Cross multiply
    37,449.20x = 51,679.90 × 20,682.20
  4. Step 4: Simplify right side
    37,449.20x = 1,068,854,027.78
  5. Step 5: Solve for x
    x = 1,068,854,027.78/37,449.20
  6. Step 6: Final answer
    x = 28,541.44

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Half scale
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Double scale
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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.