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Finding the Fourth Proportional to 163,504.82, 225,656.69 and 91,887.86

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Solution

The fourth proportional to 163,504.82, 225,656.69 and 91,887.86 is: 126,816.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,504.82 : 225,656.69 = 91,887.86 : x
  2. Step 2: Convert to fraction form
    163,504.82/225,656.69 = 91,887.86/x
  3. Step 3: Cross multiply
    163,504.82x = 225,656.69 × 91,887.86
  4. Step 4: Simplify right side
    163,504.82x = 20,735,110,338.78
  5. Step 5: Solve for x
    x = 20,735,110,338.78/163,504.82
  6. Step 6: Final answer
    x = 126,816.51

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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.