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Finding the Fourth Proportional to 517,600.80, 775,672.20 and 411,166.80

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Solution

The fourth proportional to 517,600.80, 775,672.20 and 411,166.80 is: 616,171.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,600.80 : 775,672.20 = 411,166.80 : x
  2. Step 2: Convert to fraction form
    517,600.80/775,672.20 = 411,166.80/x
  3. Step 3: Cross multiply
    517,600.80x = 775,672.20 × 411,166.80
  4. Step 4: Simplify right side
    517,600.80x = 318,930,656,322.96
  5. Step 5: Solve for x
    x = 318,930,656,322.96/517,600.80
  6. Step 6: Final answer
    x = 616,171.10

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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.