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Finding the Fourth Proportional to 619,407.56, 854,899.12 and 404,173.96

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Solution

The fourth proportional to 619,407.56, 854,899.12 and 404,173.96 is: 557,836.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,407.56 : 854,899.12 = 404,173.96 : x
  2. Step 2: Convert to fraction form
    619,407.56/854,899.12 = 404,173.96/x
  3. Step 3: Cross multiply
    619,407.56x = 854,899.12 × 404,173.96
  4. Step 4: Simplify right side
    619,407.56x = 345,527,962,730.92
  5. Step 5: Solve for x
    x = 345,527,962,730.92/619,407.56
  6. Step 6: Final answer
    x = 557,836.21

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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.