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Finding the Fourth Proportional to 66,908.58, 100,275.38 and 27,419.46

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Solution

The fourth proportional to 66,908.58, 100,275.38 and 27,419.46 is: 41,093.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,908.58 : 100,275.38 = 27,419.46 : x
  2. Step 2: Convert to fraction form
    66,908.58/100,275.38 = 27,419.46/x
  3. Step 3: Cross multiply
    66,908.58x = 100,275.38 × 27,419.46
  4. Step 4: Simplify right side
    66,908.58x = 2,749,496,770.89
  5. Step 5: Solve for x
    x = 2,749,496,770.89/66,908.58
  6. Step 6: Final answer
    x = 41,093.34

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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.