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Finding the Fourth Proportional to 511,926.20, 768,234.90 and 333,999.80

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Solution

The fourth proportional to 511,926.20, 768,234.90 and 333,999.80 is: 501,225.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,926.20 : 768,234.90 = 333,999.80 : x
  2. Step 2: Convert to fraction form
    511,926.20/768,234.90 = 333,999.80/x
  3. Step 3: Cross multiply
    511,926.20x = 768,234.90 × 333,999.80
  4. Step 4: Simplify right side
    511,926.20x = 256,590,302,953.02
  5. Step 5: Solve for x
    x = 256,590,302,953.02/511,926.20
  6. Step 6: Final answer
    x = 501,225.18

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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.