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Finding the Fourth Proportional to 68,657.08, 103,052.10 and 33,143.34

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Solution

The fourth proportional to 68,657.08, 103,052.10 and 33,143.34 is: 49,747.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,657.08 : 103,052.10 = 33,143.34 : x
  2. Step 2: Convert to fraction form
    68,657.08/103,052.10 = 33,143.34/x
  3. Step 3: Cross multiply
    68,657.08x = 103,052.10 × 33,143.34
  4. Step 4: Simplify right side
    68,657.08x = 3,415,490,788.01
  5. Step 5: Solve for x
    x = 3,415,490,788.01/68,657.08
  6. Step 6: Final answer
    x = 49,747.10

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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.