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Finding the Fourth Proportional to 543,902.46, 815,850.27 and 211,478.46

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Solution

The fourth proportional to 543,902.46, 815,850.27 and 211,478.46 is: 317,216.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,902.46 : 815,850.27 = 211,478.46 : x
  2. Step 2: Convert to fraction form
    543,902.46/815,850.27 = 211,478.46/x
  3. Step 3: Cross multiply
    543,902.46x = 815,850.27 × 211,478.46
  4. Step 4: Simplify right side
    543,902.46x = 172,534,758,690.18
  5. Step 5: Solve for x
    x = 172,534,758,690.18/543,902.46
  6. Step 6: Final answer
    x = 317,216.36

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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.