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Finding the Fourth Proportional to 546,857.20, 820,285.80 and 191,907.10

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Solution

The fourth proportional to 546,857.20, 820,285.80 and 191,907.10 is: 287,860.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,857.20 : 820,285.80 = 191,907.10 : x
  2. Step 2: Convert to fraction form
    546,857.20/820,285.80 = 191,907.10/x
  3. Step 3: Cross multiply
    546,857.20x = 820,285.80 × 191,907.10
  4. Step 4: Simplify right side
    546,857.20x = 157,418,669,049.18
  5. Step 5: Solve for x
    x = 157,418,669,049.18/546,857.20
  6. Step 6: Final answer
    x = 287,860.65

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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.