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Finding the Fourth Proportional to 467,892.80, 700,855.05 and 389,160.80

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Solution

The fourth proportional to 467,892.80, 700,855.05 and 389,160.80 is: 582,922.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,892.80 : 700,855.05 = 389,160.80 : x
  2. Step 2: Convert to fraction form
    467,892.80/700,855.05 = 389,160.80/x
  3. Step 3: Cross multiply
    467,892.80x = 700,855.05 × 389,160.80
  4. Step 4: Simplify right side
    467,892.80x = 272,745,311,942.04
  5. Step 5: Solve for x
    x = 272,745,311,942.04/467,892.80
  6. Step 6: Final answer
    x = 582,922.65

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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.