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Finding the Fourth Proportional to 167,816.80, 251,725.20 and 154,986.40

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Solution

The fourth proportional to 167,816.80, 251,725.20 and 154,986.40 is: 232,479.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,816.80 : 251,725.20 = 154,986.40 : x
  2. Step 2: Convert to fraction form
    167,816.80/251,725.20 = 154,986.40/x
  3. Step 3: Cross multiply
    167,816.80x = 251,725.20 × 154,986.40
  4. Step 4: Simplify right side
    167,816.80x = 39,013,982,537.28
  5. Step 5: Solve for x
    x = 39,013,982,537.28/167,816.80
  6. Step 6: Final answer
    x = 232,479.60

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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.