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Finding the Fourth Proportional to 127,887.88, 176,481.76 and 74,169.48

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Solution

The fourth proportional to 127,887.88, 176,481.76 and 74,169.48 is: 102,351.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,887.88 : 176,481.76 = 74,169.48 : x
  2. Step 2: Convert to fraction form
    127,887.88/176,481.76 = 74,169.48/x
  3. Step 3: Cross multiply
    127,887.88x = 176,481.76 × 74,169.48
  4. Step 4: Simplify right side
    127,887.88x = 13,089,560,368.68
  5. Step 5: Solve for x
    x = 13,089,560,368.68/127,887.88
  6. Step 6: Final answer
    x = 102,351.84

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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.