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Finding the Fourth Proportional to 214,790.54, 321,921.54 and 88,351.97

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Solution

The fourth proportional to 214,790.54, 321,921.54 and 88,351.97 is: 132,419.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,790.54 : 321,921.54 = 88,351.97 : x
  2. Step 2: Convert to fraction form
    214,790.54/321,921.54 = 88,351.97/x
  3. Step 3: Cross multiply
    214,790.54x = 321,921.54 × 88,351.97
  4. Step 4: Simplify right side
    214,790.54x = 28,442,400,634.83
  5. Step 5: Solve for x
    x = 28,442,400,634.83/214,790.54
  6. Step 6: Final answer
    x = 132,419.25

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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.