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Finding the Fourth Proportional to 117,211.62, 161,751.88 and 63,496.86

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Solution

The fourth proportional to 117,211.62, 161,751.88 and 63,496.86 is: 87,625.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,211.62 : 161,751.88 = 63,496.86 : x
  2. Step 2: Convert to fraction form
    117,211.62/161,751.88 = 63,496.86/x
  3. Step 3: Cross multiply
    117,211.62x = 161,751.88 × 63,496.86
  4. Step 4: Simplify right side
    117,211.62x = 10,270,735,951.90
  5. Step 5: Solve for x
    x = 10,270,735,951.90/117,211.62
  6. Step 6: Final answer
    x = 87,625.58

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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.