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Finding the Fourth Proportional to 225,787.59, 338,638.21 and 113,436.68

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Solution

The fourth proportional to 225,787.59, 338,638.21 and 113,436.68 is: 170,133.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,787.59 : 338,638.21 = 113,436.68 : x
  2. Step 2: Convert to fraction form
    225,787.59/338,638.21 = 113,436.68/x
  3. Step 3: Cross multiply
    225,787.59x = 338,638.21 × 113,436.68
  4. Step 4: Simplify right side
    225,787.59x = 38,413,992,286.76
  5. Step 5: Solve for x
    x = 38,413,992,286.76/225,787.59
  6. Step 6: Final answer
    x = 170,133.32

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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.