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Finding the Fourth Proportional to 519,930.20, 779,239.20 and 253,116.20

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Solution

The fourth proportional to 519,930.20, 779,239.20 and 253,116.20 is: 379,354.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,930.20 : 779,239.20 = 253,116.20 : x
  2. Step 2: Convert to fraction form
    519,930.20/779,239.20 = 253,116.20/x
  3. Step 3: Cross multiply
    519,930.20x = 779,239.20 × 253,116.20
  4. Step 4: Simplify right side
    519,930.20x = 197,238,065,195.04
  5. Step 5: Solve for x
    x = 197,238,065,195.04/519,930.20
  6. Step 6: Final answer
    x = 379,354.89

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Similar ratio
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1.5x scale

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.