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Finding the Fourth Proportional to 54,958.56, 82,410.12 and 39,154.56

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Solution

The fourth proportional to 54,958.56, 82,410.12 and 39,154.56 is: 58,712.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,958.56 : 82,410.12 = 39,154.56 : x
  2. Step 2: Convert to fraction form
    54,958.56/82,410.12 = 39,154.56/x
  3. Step 3: Cross multiply
    54,958.56x = 82,410.12 × 39,154.56
  4. Step 4: Simplify right side
    54,958.56x = 3,226,731,988.15
  5. Step 5: Solve for x
    x = 3,226,731,988.15/54,958.56
  6. Step 6: Final answer
    x = 58,712.09

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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.