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Finding the Fourth Proportional to 73,818.46, 110,711.37 and 21,216.22

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Solution

The fourth proportional to 73,818.46, 110,711.37 and 21,216.22 is: 31,819.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,818.46 : 110,711.37 = 21,216.22 : x
  2. Step 2: Convert to fraction form
    73,818.46/110,711.37 = 21,216.22/x
  3. Step 3: Cross multiply
    73,818.46x = 110,711.37 × 21,216.22
  4. Step 4: Simplify right side
    73,818.46x = 2,348,876,782.42
  5. Step 5: Solve for x
    x = 2,348,876,782.42/73,818.46
  6. Step 6: Final answer
    x = 31,819.64

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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.