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Finding the Fourth Proportional to 79,646.98, 109,910.66 and 43,346.88

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Solution

The fourth proportional to 79,646.98, 109,910.66 and 43,346.88 is: 59,817.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,646.98 : 109,910.66 = 43,346.88 : x
  2. Step 2: Convert to fraction form
    79,646.98/109,910.66 = 43,346.88/x
  3. Step 3: Cross multiply
    79,646.98x = 109,910.66 × 43,346.88
  4. Step 4: Simplify right side
    79,646.98x = 4,764,284,189.74
  5. Step 5: Solve for x
    x = 4,764,284,189.74/79,646.98
  6. Step 6: Final answer
    x = 59,817.51

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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.