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Finding the Fourth Proportional to 68,613.12, 102,936.72 and 48,842.64

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Solution

The fourth proportional to 68,613.12, 102,936.72 and 48,842.64 is: 73,276.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,613.12 : 102,936.72 = 48,842.64 : x
  2. Step 2: Convert to fraction form
    68,613.12/102,936.72 = 48,842.64/x
  3. Step 3: Cross multiply
    68,613.12x = 102,936.72 × 48,842.64
  4. Step 4: Simplify right side
    68,613.12x = 5,027,701,157.74
  5. Step 5: Solve for x
    x = 5,027,701,157.74/68,613.12
  6. Step 6: Final answer
    x = 73,276.09

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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.