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Finding the Fourth Proportional to 619,403.55, 854,893.60 and 404,169.95

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Solution

The fourth proportional to 619,403.55, 854,893.60 and 404,169.95 is: 557,830.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,403.55 : 854,893.60 = 404,169.95 : x
  2. Step 2: Convert to fraction form
    619,403.55/854,893.60 = 404,169.95/x
  3. Step 3: Cross multiply
    619,403.55x = 854,893.60 × 404,169.95
  4. Step 4: Simplify right side
    619,403.55x = 345,522,299,292.85
  5. Step 5: Solve for x
    x = 345,522,299,292.85/619,403.55
  6. Step 6: Final answer
    x = 557,830.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.