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Finding the Fourth Proportional to 78,196.56, 117,200.82 and 36,018.66

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Solution

The fourth proportional to 78,196.56, 117,200.82 and 36,018.66 is: 53,984.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,196.56 : 117,200.82 = 36,018.66 : x
  2. Step 2: Convert to fraction form
    78,196.56/117,200.82 = 36,018.66/x
  3. Step 3: Cross multiply
    78,196.56x = 117,200.82 × 36,018.66
  4. Step 4: Simplify right side
    78,196.56x = 4,221,416,487.30
  5. Step 5: Solve for x
    x = 4,221,416,487.30/78,196.56
  6. Step 6: Final answer
    x = 53,984.68

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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.