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Finding the Fourth Proportional to 547,234.10, 820,851.15 and 173,257.10

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Solution

The fourth proportional to 547,234.10, 820,851.15 and 173,257.10 is: 259,885.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,234.10 : 820,851.15 = 173,257.10 : x
  2. Step 2: Convert to fraction form
    547,234.10/820,851.15 = 173,257.10/x
  3. Step 3: Cross multiply
    547,234.10x = 820,851.15 × 173,257.10
  4. Step 4: Simplify right side
    547,234.10x = 142,218,289,780.67
  5. Step 5: Solve for x
    x = 142,218,289,780.67/547,234.10
  6. Step 6: Final answer
    x = 259,885.65

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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.