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Finding the Fourth Proportional to 551,863.80, 827,795.70 and 410,146.20

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Solution

The fourth proportional to 551,863.80, 827,795.70 and 410,146.20 is: 615,219.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,863.80 : 827,795.70 = 410,146.20 : x
  2. Step 2: Convert to fraction form
    551,863.80/827,795.70 = 410,146.20/x
  3. Step 3: Cross multiply
    551,863.80x = 827,795.70 × 410,146.20
  4. Step 4: Simplify right side
    551,863.80x = 339,517,260,731.34
  5. Step 5: Solve for x
    x = 339,517,260,731.34/551,863.80
  6. Step 6: Final answer
    x = 615,219.30

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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.