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Finding the Fourth Proportional to 275,791.20, 414,075.60 and 170,815.20

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Solution

The fourth proportional to 275,791.20, 414,075.60 and 170,815.20 is: 256,463.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,791.20 : 414,075.60 = 170,815.20 : x
  2. Step 2: Convert to fraction form
    275,791.20/414,075.60 = 170,815.20/x
  3. Step 3: Cross multiply
    275,791.20x = 414,075.60 × 170,815.20
  4. Step 4: Simplify right side
    275,791.20x = 70,730,406,429.12
  5. Step 5: Solve for x
    x = 70,730,406,429.12/275,791.20
  6. Step 6: Final answer
    x = 256,463.61

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1.5x scale

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.