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Finding the Fourth Proportional to 79,200.46, 109,296.60 and 47,369.36

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Solution

The fourth proportional to 79,200.46, 109,296.60 and 47,369.36 is: 65,369.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,200.46 : 109,296.60 = 47,369.36 : x
  2. Step 2: Convert to fraction form
    79,200.46/109,296.60 = 47,369.36/x
  3. Step 3: Cross multiply
    79,200.46x = 109,296.60 × 47,369.36
  4. Step 4: Simplify right side
    79,200.46x = 5,177,309,992.18
  5. Step 5: Solve for x
    x = 5,177,309,992.18/79,200.46
  6. Step 6: Final answer
    x = 65,369.70

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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.