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Finding the Fourth Proportional to 547,951.12, 821,928.21 and 168,859.61

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Solution

The fourth proportional to 547,951.12, 821,928.21 and 168,859.61 is: 253,289.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,951.12 : 821,928.21 = 168,859.61 : x
  2. Step 2: Convert to fraction form
    547,951.12/821,928.21 = 168,859.61/x
  3. Step 3: Cross multiply
    547,951.12x = 821,928.21 × 168,859.61
  4. Step 4: Simplify right side
    547,951.12x = 138,790,476,988.60
  5. Step 5: Solve for x
    x = 138,790,476,988.60/547,951.12
  6. Step 6: Final answer
    x = 253,289.89

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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.