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Finding the Fourth Proportional to 619,173.78, 854,410.02 and 343,540.50

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Solution

The fourth proportional to 619,173.78, 854,410.02 and 343,540.50 is: 474,058.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,173.78 : 854,410.02 = 343,540.50 : x
  2. Step 2: Convert to fraction form
    619,173.78/854,410.02 = 343,540.50/x
  3. Step 3: Cross multiply
    619,173.78x = 854,410.02 × 343,540.50
  4. Step 4: Simplify right side
    619,173.78x = 293,524,445,475.81
  5. Step 5: Solve for x
    x = 293,524,445,475.81/619,173.78
  6. Step 6: Final answer
    x = 474,058.26

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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.