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Finding the Fourth Proportional to 548,513.40, 822,770.10 and 327,329.40

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Solution

The fourth proportional to 548,513.40, 822,770.10 and 327,329.40 is: 490,994.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,513.40 : 822,770.10 = 327,329.40 : x
  2. Step 2: Convert to fraction form
    548,513.40/822,770.10 = 327,329.40/x
  3. Step 3: Cross multiply
    548,513.40x = 822,770.10 × 327,329.40
  4. Step 4: Simplify right side
    548,513.40x = 269,316,843,170.94
  5. Step 5: Solve for x
    x = 269,316,843,170.94/548,513.40
  6. Step 6: Final answer
    x = 490,994.10

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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.