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Finding the Fourth Proportional to 66,663.88, 99,906.96 and 32,878.24

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Solution

The fourth proportional to 66,663.88, 99,906.96 and 32,878.24 is: 49,273.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,663.88 : 99,906.96 = 32,878.24 : x
  2. Step 2: Convert to fraction form
    66,663.88/99,906.96 = 32,878.24/x
  3. Step 3: Cross multiply
    66,663.88x = 99,906.96 × 32,878.24
  4. Step 4: Simplify right side
    66,663.88x = 3,284,765,008.55
  5. Step 5: Solve for x
    x = 3,284,765,008.55/66,663.88
  6. Step 6: Final answer
    x = 49,273.53

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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.