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Finding the Fourth Proportional to 274,543.80, 411,815.70 and 264,046.20

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Solution

The fourth proportional to 274,543.80, 411,815.70 and 264,046.20 is: 396,069.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,543.80 : 411,815.70 = 264,046.20 : x
  2. Step 2: Convert to fraction form
    274,543.80/411,815.70 = 264,046.20/x
  3. Step 3: Cross multiply
    274,543.80x = 411,815.70 × 264,046.20
  4. Step 4: Simplify right side
    274,543.80x = 108,738,370,685.34
  5. Step 5: Solve for x
    x = 108,738,370,685.34/274,543.80
  6. Step 6: Final answer
    x = 396,069.30

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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.