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Finding the Fourth Proportional to 225,431.86, 338,153.94 and 67,660.31

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Solution

The fourth proportional to 225,431.86, 338,153.94 and 67,660.31 is: 101,492.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,431.86 : 338,153.94 = 67,660.31 : x
  2. Step 2: Convert to fraction form
    225,431.86/338,153.94 = 67,660.31/x
  3. Step 3: Cross multiply
    225,431.86x = 338,153.94 × 67,660.31
  4. Step 4: Simplify right side
    225,431.86x = 22,879,601,253.51
  5. Step 5: Solve for x
    x = 22,879,601,253.51/225,431.86
  6. Step 6: Final answer
    x = 101,492.31

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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.