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Finding the Fourth Proportional to 68,713.32, 103,105.08 and 32,730.48

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Solution

The fourth proportional to 68,713.32, 103,105.08 and 32,730.48 is: 49,112.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,713.32 : 103,105.08 = 32,730.48 : x
  2. Step 2: Convert to fraction form
    68,713.32/103,105.08 = 32,730.48/x
  3. Step 3: Cross multiply
    68,713.32x = 103,105.08 × 32,730.48
  4. Step 4: Simplify right side
    68,713.32x = 3,374,678,758.84
  5. Step 5: Solve for x
    x = 3,374,678,758.84/68,713.32
  6. Step 6: Final answer
    x = 49,112.44

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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.