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Finding the Fourth Proportional to 590,811.20, 886,216.80 and 354,420.80

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Solution

The fourth proportional to 590,811.20, 886,216.80 and 354,420.80 is: 531,631.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,811.20 : 886,216.80 = 354,420.80 : x
  2. Step 2: Convert to fraction form
    590,811.20/886,216.80 = 354,420.80/x
  3. Step 3: Cross multiply
    590,811.20x = 886,216.80 × 354,420.80
  4. Step 4: Simplify right side
    590,811.20x = 314,093,667,229.44
  5. Step 5: Solve for x
    x = 314,093,667,229.44/590,811.20
  6. Step 6: Final answer
    x = 531,631.20

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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.