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Finding the Fourth Proportional to 511,856.70, 768,015.45 and 245,514.30

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Solution

The fourth proportional to 511,856.70, 768,015.45 and 245,514.30 is: 368,381.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,856.70 : 768,015.45 = 245,514.30 : x
  2. Step 2: Convert to fraction form
    511,856.70/768,015.45 = 245,514.30/x
  3. Step 3: Cross multiply
    511,856.70x = 768,015.45 × 245,514.30
  4. Step 4: Simplify right side
    511,856.70x = 188,558,775,595.94
  5. Step 5: Solve for x
    x = 188,558,775,595.94/511,856.70
  6. Step 6: Final answer
    x = 368,381.96

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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.