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Finding the Fourth Proportional to 79,653.44, 109,920.91 and 43,842.68

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Solution

The fourth proportional to 79,653.44, 109,920.91 and 43,842.68 is: 60,502.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,653.44 : 109,920.91 = 43,842.68 : x
  2. Step 2: Convert to fraction form
    79,653.44/109,920.91 = 43,842.68/x
  3. Step 3: Cross multiply
    79,653.44x = 109,920.91 × 43,842.68
  4. Step 4: Simplify right side
    79,653.44x = 4,819,227,282.44
  5. Step 5: Solve for x
    x = 4,819,227,282.44/79,653.44
  6. Step 6: Final answer
    x = 60,502.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.