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Finding the Fourth Proportional to 526,493.20, 789,739.80 and 414,518.80

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Solution

The fourth proportional to 526,493.20, 789,739.80 and 414,518.80 is: 621,778.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,493.20 : 789,739.80 = 414,518.80 : x
  2. Step 2: Convert to fraction form
    526,493.20/789,739.80 = 414,518.80/x
  3. Step 3: Cross multiply
    526,493.20x = 789,739.80 × 414,518.80
  4. Step 4: Simplify right side
    526,493.20x = 327,361,994,208.24
  5. Step 5: Solve for x
    x = 327,361,994,208.24/526,493.20
  6. Step 6: Final answer
    x = 621,778.20

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Double scale
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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.