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Finding the Fourth Proportional to 79,636.60, 109,892.84 and 47,369.44

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Solution

The fourth proportional to 79,636.60, 109,892.84 and 47,369.44 is: 65,366.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,636.60 : 109,892.84 = 47,369.44 : x
  2. Step 2: Convert to fraction form
    79,636.60/109,892.84 = 47,369.44/x
  3. Step 3: Cross multiply
    79,636.60x = 109,892.84 × 47,369.44
  4. Step 4: Simplify right side
    79,636.60x = 5,205,562,331.08
  5. Step 5: Solve for x
    x = 5,205,562,331.08/79,636.60
  6. Step 6: Final answer
    x = 65,366.46

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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.