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Finding the Fourth Proportional to 543,410.20, 815,115.30 and 333,166.60

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Solution

The fourth proportional to 543,410.20, 815,115.30 and 333,166.60 is: 499,749.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,410.20 : 815,115.30 = 333,166.60 : x
  2. Step 2: Convert to fraction form
    543,410.20/815,115.30 = 333,166.60/x
  3. Step 3: Cross multiply
    543,410.20x = 815,115.30 × 333,166.60
  4. Step 4: Simplify right side
    543,410.20x = 271,569,193,108.98
  5. Step 5: Solve for x
    x = 271,569,193,108.98/543,410.20
  6. Step 6: Final answer
    x = 499,749.90

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Half scale
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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.