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Finding the Fourth Proportional to 39,291.75, 58,948.43 and 11,589.75

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Solution

The fourth proportional to 39,291.75, 58,948.43 and 11,589.75 is: 17,387.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,291.75 : 58,948.43 = 11,589.75 : x
  2. Step 2: Convert to fraction form
    39,291.75/58,948.43 = 11,589.75/x
  3. Step 3: Cross multiply
    39,291.75x = 58,948.43 × 11,589.75
  4. Step 4: Simplify right side
    39,291.75x = 683,197,508.64
  5. Step 5: Solve for x
    x = 683,197,508.64/39,291.75
  6. Step 6: Final answer
    x = 17,387.81

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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.