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Finding the Fourth Proportional to 159,467.58, 220,058.19 and 91,435.86

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Solution

The fourth proportional to 159,467.58, 220,058.19 and 91,435.86 is: 126,177.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,467.58 : 220,058.19 = 91,435.86 : x
  2. Step 2: Convert to fraction form
    159,467.58/220,058.19 = 91,435.86/x
  3. Step 3: Cross multiply
    159,467.58x = 220,058.19 × 91,435.86
  4. Step 4: Simplify right side
    159,467.58x = 20,121,209,852.69
  5. Step 5: Solve for x
    x = 20,121,209,852.69/159,467.58
  6. Step 6: Final answer
    x = 126,177.43

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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.