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Finding the Fourth Proportional to 68,452.80, 102,679.20 and 37,348.80

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Solution

The fourth proportional to 68,452.80, 102,679.20 and 37,348.80 is: 56,023.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,452.80 : 102,679.20 = 37,348.80 : x
  2. Step 2: Convert to fraction form
    68,452.80/102,679.20 = 37,348.80/x
  3. Step 3: Cross multiply
    68,452.80x = 102,679.20 × 37,348.80
  4. Step 4: Simplify right side
    68,452.80x = 3,834,944,904.96
  5. Step 5: Solve for x
    x = 3,834,944,904.96/68,452.80
  6. Step 6: Final answer
    x = 56,023.20

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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.