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Finding the Fourth Proportional to 38,892.88, 58,339.32 and 11,190.88

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Solution

The fourth proportional to 38,892.88, 58,339.32 and 11,190.88 is: 16,786.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,892.88 : 58,339.32 = 11,190.88 : x
  2. Step 2: Convert to fraction form
    38,892.88/58,339.32 = 11,190.88/x
  3. Step 3: Cross multiply
    38,892.88x = 58,339.32 × 11,190.88
  4. Step 4: Simplify right side
    38,892.88x = 652,867,981.75
  5. Step 5: Solve for x
    x = 652,867,981.75/38,892.88
  6. Step 6: Final answer
    x = 16,786.31

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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.