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Finding the Fourth Proportional to 519,882.40, 778,511.40 and 341,423.20

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Solution

The fourth proportional to 519,882.40, 778,511.40 and 341,423.20 is: 511,273.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,882.40 : 778,511.40 = 341,423.20 : x
  2. Step 2: Convert to fraction form
    519,882.40/778,511.40 = 341,423.20/x
  3. Step 3: Cross multiply
    519,882.40x = 778,511.40 × 341,423.20
  4. Step 4: Simplify right side
    519,882.40x = 265,801,853,424.48
  5. Step 5: Solve for x
    x = 265,801,853,424.48/519,882.40
  6. Step 6: Final answer
    x = 511,273.04

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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.