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Finding the Fourth Proportional to 483,621.60, 725,432.40 and 259,672.80

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Solution

The fourth proportional to 483,621.60, 725,432.40 and 259,672.80 is: 389,509.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,621.60 : 725,432.40 = 259,672.80 : x
  2. Step 2: Convert to fraction form
    483,621.60/725,432.40 = 259,672.80/x
  3. Step 3: Cross multiply
    483,621.60x = 725,432.40 × 259,672.80
  4. Step 4: Simplify right side
    483,621.60x = 188,375,062,518.72
  5. Step 5: Solve for x
    x = 188,375,062,518.72/483,621.60
  6. Step 6: Final answer
    x = 389,509.20

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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.