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Finding the Fourth Proportional to 414,063.68, 620,959.36 and 129,753.60

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Solution

The fourth proportional to 414,063.68, 620,959.36 and 129,753.60 is: 194,587.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,063.68 : 620,959.36 = 129,753.60 : x
  2. Step 2: Convert to fraction form
    414,063.68/620,959.36 = 129,753.60/x
  3. Step 3: Cross multiply
    414,063.68x = 620,959.36 × 129,753.60
  4. Step 4: Simplify right side
    414,063.68x = 80,571,712,413.70
  5. Step 5: Solve for x
    x = 80,571,712,413.70/414,063.68
  6. Step 6: Final answer
    x = 194,587.73

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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.