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Finding the Fourth Proportional to 318,672.43, 478,090.67 and 94,023.79

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Solution

The fourth proportional to 318,672.43, 478,090.67 and 94,023.79 is: 141,059.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,672.43 : 478,090.67 = 94,023.79 : x
  2. Step 2: Convert to fraction form
    318,672.43/478,090.67 = 94,023.79/x
  3. Step 3: Cross multiply
    318,672.43x = 478,090.67 × 94,023.79
  4. Step 4: Simplify right side
    318,672.43x = 44,951,896,757.04
  5. Step 5: Solve for x
    x = 44,951,896,757.04/318,672.43
  6. Step 6: Final answer
    x = 141,059.89

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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.