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Finding the Fourth Proportional to 568,729.20, 852,684.20 and 319,487.60

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Solution

The fourth proportional to 568,729.20, 852,684.20 and 319,487.60 is: 479,001.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,729.20 : 852,684.20 = 319,487.60 : x
  2. Step 2: Convert to fraction form
    568,729.20/852,684.20 = 319,487.60/x
  3. Step 3: Cross multiply
    568,729.20x = 852,684.20 × 319,487.60
  4. Step 4: Simplify right side
    568,729.20x = 272,422,028,615.92
  5. Step 5: Solve for x
    x = 272,422,028,615.92/568,729.20
  6. Step 6: Final answer
    x = 479,001.30

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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.