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Finding the Fourth Proportional to 536,820.40, 804,539.40 and 411,540.40

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Solution

The fourth proportional to 536,820.40, 804,539.40 and 411,540.40 is: 616,780.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,820.40 : 804,539.40 = 411,540.40 : x
  2. Step 2: Convert to fraction form
    536,820.40/804,539.40 = 411,540.40/x
  3. Step 3: Cross multiply
    536,820.40x = 804,539.40 × 411,540.40
  4. Step 4: Simplify right side
    536,820.40x = 331,100,466,491.76
  5. Step 5: Solve for x
    x = 331,100,466,491.76/536,820.40
  6. Step 6: Final answer
    x = 616,780.71

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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.