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Finding the Fourth Proportional to 69,858.45, 96,221.03 and 53,694.86

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Solution

The fourth proportional to 69,858.45, 96,221.03 and 53,694.86 is: 73,957.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,858.45 : 96,221.03 = 53,694.86 : x
  2. Step 2: Convert to fraction form
    69,858.45/96,221.03 = 53,694.86/x
  3. Step 3: Cross multiply
    69,858.45x = 96,221.03 × 53,694.86
  4. Step 4: Simplify right side
    69,858.45x = 5,166,573,985.33
  5. Step 5: Solve for x
    x = 5,166,573,985.33/69,858.45
  6. Step 6: Final answer
    x = 73,957.75

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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.