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Finding the Fourth Proportional to 543,611.80, 814,761.60 and 277,235.20

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Solution

The fourth proportional to 543,611.80, 814,761.60 and 277,235.20 is: 415,518.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,611.80 : 814,761.60 = 277,235.20 : x
  2. Step 2: Convert to fraction form
    543,611.80/814,761.60 = 277,235.20/x
  3. Step 3: Cross multiply
    543,611.80x = 814,761.60 × 277,235.20
  4. Step 4: Simplify right side
    543,611.80x = 225,880,595,128.32
  5. Step 5: Solve for x
    x = 225,880,595,128.32/543,611.80
  6. Step 6: Final answer
    x = 415,518.20

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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.