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Finding the Fourth Proportional to 68,398.31, 102,633.58 and 48,536.15

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Solution

The fourth proportional to 68,398.31, 102,633.58 and 48,536.15 is: 72,829.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,398.31 : 102,633.58 = 48,536.15 : x
  2. Step 2: Convert to fraction form
    68,398.31/102,633.58 = 48,536.15/x
  3. Step 3: Cross multiply
    68,398.31x = 102,633.58 × 48,536.15
  4. Step 4: Simplify right side
    68,398.31x = 4,981,438,833.92
  5. Step 5: Solve for x
    x = 4,981,438,833.92/68,398.31
  6. Step 6: Final answer
    x = 72,829.85

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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.