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Finding the Fourth Proportional to 511,853.70, 768,010.95 and 245,511.30

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Solution

The fourth proportional to 511,853.70, 768,010.95 and 245,511.30 is: 368,377.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,853.70 : 768,010.95 = 245,511.30 : x
  2. Step 2: Convert to fraction form
    511,853.70/768,010.95 = 245,511.30/x
  3. Step 3: Cross multiply
    511,853.70x = 768,010.95 × 245,511.30
  4. Step 4: Simplify right side
    511,853.70x = 188,555,366,748.74
  5. Step 5: Solve for x
    x = 188,555,366,748.74/511,853.70
  6. Step 6: Final answer
    x = 368,377.46

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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.