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Finding the Fourth Proportional to 551,406.55, 827,109.83 and 411,438.55

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Solution

The fourth proportional to 551,406.55, 827,109.83 and 411,438.55 is: 617,157.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,406.55 : 827,109.83 = 411,438.55 : x
  2. Step 2: Convert to fraction form
    551,406.55/827,109.83 = 411,438.55/x
  3. Step 3: Cross multiply
    551,406.55x = 827,109.83 × 411,438.55
  4. Step 4: Simplify right side
    551,406.55x = 340,304,869,145.95
  5. Step 5: Solve for x
    x = 340,304,869,145.95/551,406.55
  6. Step 6: Final answer
    x = 617,157.83

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Similar ratio
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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.