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Finding the Fourth Proportional to 543,161.60, 813,770.40 and 262,059.20

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Solution

The fourth proportional to 543,161.60, 813,770.40 and 262,059.20 is: 392,619.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,161.60 : 813,770.40 = 262,059.20 : x
  2. Step 2: Convert to fraction form
    543,161.60/813,770.40 = 262,059.20/x
  3. Step 3: Cross multiply
    543,161.60x = 813,770.40 × 262,059.20
  4. Step 4: Simplify right side
    543,161.60x = 213,256,020,007.68
  5. Step 5: Solve for x
    x = 213,256,020,007.68/543,161.60
  6. Step 6: Final answer
    x = 392,619.84

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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.