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Finding the Fourth Proportional to 575,942.80, 863,914.20 and 324,000.40

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Solution

The fourth proportional to 575,942.80, 863,914.20 and 324,000.40 is: 486,000.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,942.80 : 863,914.20 = 324,000.40 : x
  2. Step 2: Convert to fraction form
    575,942.80/863,914.20 = 324,000.40/x
  3. Step 3: Cross multiply
    575,942.80x = 863,914.20 × 324,000.40
  4. Step 4: Simplify right side
    575,942.80x = 279,908,546,365.68
  5. Step 5: Solve for x
    x = 279,908,546,365.68/575,942.80
  6. Step 6: Final answer
    x = 486,000.60

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Double scale
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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.