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Finding the Fourth Proportional to 414,075.33, 621,113.04 and 129,765.78

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Solution

The fourth proportional to 414,075.33, 621,113.04 and 129,765.78 is: 194,648.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,075.33 : 621,113.04 = 129,765.78 : x
  2. Step 2: Convert to fraction form
    414,075.33/621,113.04 = 129,765.78/x
  3. Step 3: Cross multiply
    414,075.33x = 621,113.04 × 129,765.78
  4. Step 4: Simplify right side
    414,075.33x = 80,599,218,103.77
  5. Step 5: Solve for x
    x = 80,599,218,103.77/414,075.33
  6. Step 6: Final answer
    x = 194,648.68

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Similar ratio
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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.