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Finding the Fourth Proportional to 68,893.92, 103,253.40 and 33,347.88

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Solution

The fourth proportional to 68,893.92, 103,253.40 and 33,347.88 is: 49,979.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,893.92 : 103,253.40 = 33,347.88 : x
  2. Step 2: Convert to fraction form
    68,893.92/103,253.40 = 33,347.88/x
  3. Step 3: Cross multiply
    68,893.92x = 103,253.40 × 33,347.88
  4. Step 4: Simplify right side
    68,893.92x = 3,443,281,992.79
  5. Step 5: Solve for x
    x = 3,443,281,992.79/68,893.92
  6. Step 6: Final answer
    x = 49,979.48

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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.