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Finding the Fourth Proportional to 275,102.80, 384,356.60 and 275,102.80

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Solution

The fourth proportional to 275,102.80, 384,356.60 and 275,102.80 is: 384,356.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,102.80 : 384,356.60 = 275,102.80 : x
  2. Step 2: Convert to fraction form
    275,102.80/384,356.60 = 275,102.80/x
  3. Step 3: Cross multiply
    275,102.80x = 384,356.60 × 275,102.80
  4. Step 4: Simplify right side
    275,102.80x = 105,737,576,858.48
  5. Step 5: Solve for x
    x = 105,737,576,858.48/275,102.80
  6. Step 6: Final answer
    x = 384,356.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.