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Finding the Fourth Proportional to 69,469.76, 104,095.36 and 53,713.28

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Solution

The fourth proportional to 69,469.76, 104,095.36 and 53,713.28 is: 80,485.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,469.76 : 104,095.36 = 53,713.28 : x
  2. Step 2: Convert to fraction form
    69,469.76/104,095.36 = 53,713.28/x
  3. Step 3: Cross multiply
    69,469.76x = 104,095.36 × 53,713.28
  4. Step 4: Simplify right side
    69,469.76x = 5,591,303,218.38
  5. Step 5: Solve for x
    x = 5,591,303,218.38/69,469.76
  6. Step 6: Final answer
    x = 80,485.43

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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.