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Finding the Fourth Proportional to 68,659.44, 102,890.74 and 39,014.65

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Solution

The fourth proportional to 68,659.44, 102,890.74 and 39,014.65 is: 58,466.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,659.44 : 102,890.74 = 39,014.65 : x
  2. Step 2: Convert to fraction form
    68,659.44/102,890.74 = 39,014.65/x
  3. Step 3: Cross multiply
    68,659.44x = 102,890.74 × 39,014.65
  4. Step 4: Simplify right side
    68,659.44x = 4,014,246,209.34
  5. Step 5: Solve for x
    x = 4,014,246,209.34/68,659.44
  6. Step 6: Final answer
    x = 58,466.05

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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.