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Finding the Fourth Proportional to 159,046.92, 219,485.22 and 91,064.94

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Solution

The fourth proportional to 159,046.92, 219,485.22 and 91,064.94 is: 125,669.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,046.92 : 219,485.22 = 91,064.94 : x
  2. Step 2: Convert to fraction form
    159,046.92/219,485.22 = 91,064.94/x
  3. Step 3: Cross multiply
    159,046.92x = 219,485.22 × 91,064.94
  4. Step 4: Simplify right side
    159,046.92x = 19,987,408,390.19
  5. Step 5: Solve for x
    x = 19,987,408,390.19/159,046.92
  6. Step 6: Final answer
    x = 125,669.89

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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.