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Finding the Fourth Proportional to 547,634.70, 821,574.45 and 192,660.30

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Solution

The fourth proportional to 547,634.70, 821,574.45 and 192,660.30 is: 289,033.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,634.70 : 821,574.45 = 192,660.30 : x
  2. Step 2: Convert to fraction form
    547,634.70/821,574.45 = 192,660.30/x
  3. Step 3: Cross multiply
    547,634.70x = 821,574.45 × 192,660.30
  4. Step 4: Simplify right side
    547,634.70x = 158,284,780,009.34
  5. Step 5: Solve for x
    x = 158,284,780,009.34/547,634.70
  6. Step 6: Final answer
    x = 289,033.51

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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.