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Finding the Fourth Proportional to 547,757.80, 821,636.70 and 193,172.20

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Solution

The fourth proportional to 547,757.80, 821,636.70 and 193,172.20 is: 289,758.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,757.80 : 821,636.70 = 193,172.20 : x
  2. Step 2: Convert to fraction form
    547,757.80/821,636.70 = 193,172.20/x
  3. Step 3: Cross multiply
    547,757.80x = 821,636.70 × 193,172.20
  4. Step 4: Simplify right side
    547,757.80x = 158,717,368,939.74
  5. Step 5: Solve for x
    x = 158,717,368,939.74/547,757.80
  6. Step 6: Final answer
    x = 289,758.30

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Similar ratio
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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.