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Finding the Fourth Proportional to 117,894.20, 176,863.16 and 39,009.11

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Solution

The fourth proportional to 117,894.20, 176,863.16 and 39,009.11 is: 58,520.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,894.20 : 176,863.16 = 39,009.11 : x
  2. Step 2: Convert to fraction form
    117,894.20/176,863.16 = 39,009.11/x
  3. Step 3: Cross multiply
    117,894.20x = 176,863.16 × 39,009.11
  4. Step 4: Simplify right side
    117,894.20x = 6,899,273,676.59
  5. Step 5: Solve for x
    x = 6,899,273,676.59/117,894.20
  6. Step 6: Final answer
    x = 58,520.89

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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.