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Finding the Fourth Proportional to 551,490.80, 827,236.20 and 411,522.80

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Solution

The fourth proportional to 551,490.80, 827,236.20 and 411,522.80 is: 617,284.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,490.80 : 827,236.20 = 411,522.80 : x
  2. Step 2: Convert to fraction form
    551,490.80/827,236.20 = 411,522.80/x
  3. Step 3: Cross multiply
    551,490.80x = 827,236.20 × 411,522.80
  4. Step 4: Simplify right side
    551,490.80x = 340,426,557,285.36
  5. Step 5: Solve for x
    x = 340,426,557,285.36/551,490.80
  6. Step 6: Final answer
    x = 617,284.20

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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.