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Finding the Fourth Proportional to 117,470.91, 162,109.97 and 63,755.94

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Solution

The fourth proportional to 117,470.91, 162,109.97 and 63,755.94 is: 87,983.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,470.91 : 162,109.97 = 63,755.94 : x
  2. Step 2: Convert to fraction form
    117,470.91/162,109.97 = 63,755.94/x
  3. Step 3: Cross multiply
    117,470.91x = 162,109.97 × 63,755.94
  4. Step 4: Simplify right side
    117,470.91x = 10,335,473,520.72
  5. Step 5: Solve for x
    x = 10,335,473,520.72/117,470.91
  6. Step 6: Final answer
    x = 87,983.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.