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Finding the Fourth Proportional to 619,672.78, 929,489.72 and 340,942.06

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Solution

The fourth proportional to 619,672.78, 929,489.72 and 340,942.06 is: 511,402.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,672.78 : 929,489.72 = 340,942.06 : x
  2. Step 2: Convert to fraction form
    619,672.78/929,489.72 = 340,942.06/x
  3. Step 3: Cross multiply
    619,672.78x = 929,489.72 × 340,942.06
  4. Step 4: Simplify right side
    619,672.78x = 316,902,139,885.62
  5. Step 5: Solve for x
    x = 316,902,139,885.62/619,672.78
  6. Step 6: Final answer
    x = 511,402.39

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1.5x scale

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.