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Finding the Fourth Proportional to 546,857.70, 820,286.55 and 191,907.60

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Solution

The fourth proportional to 546,857.70, 820,286.55 and 191,907.60 is: 287,861.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,857.70 : 820,286.55 = 191,907.60 : x
  2. Step 2: Convert to fraction form
    546,857.70/820,286.55 = 191,907.60/x
  3. Step 3: Cross multiply
    546,857.70x = 820,286.55 × 191,907.60
  4. Step 4: Simplify right side
    546,857.70x = 157,419,223,122.78
  5. Step 5: Solve for x
    x = 157,419,223,122.78/546,857.70
  6. Step 6: Final answer
    x = 287,861.40

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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.