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Finding the Fourth Proportional to 536,329.80, 804,494.70 and 394,612.20

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Solution

The fourth proportional to 536,329.80, 804,494.70 and 394,612.20 is: 591,918.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,329.80 : 804,494.70 = 394,612.20 : x
  2. Step 2: Convert to fraction form
    536,329.80/804,494.70 = 394,612.20/x
  3. Step 3: Cross multiply
    536,329.80x = 804,494.70 × 394,612.20
  4. Step 4: Simplify right side
    536,329.80x = 317,463,423,455.34
  5. Step 5: Solve for x
    x = 317,463,423,455.34/536,329.80
  6. Step 6: Final answer
    x = 591,918.30

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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.