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Finding the Fourth Proportional to 66,694.88, 92,041.89 and 38,409.68

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Solution

The fourth proportional to 66,694.88, 92,041.89 and 38,409.68 is: 53,007.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,694.88 : 92,041.89 = 38,409.68 : x
  2. Step 2: Convert to fraction form
    66,694.88/92,041.89 = 38,409.68/x
  3. Step 3: Cross multiply
    66,694.88x = 92,041.89 × 38,409.68
  4. Step 4: Simplify right side
    66,694.88x = 3,535,299,627.56
  5. Step 5: Solve for x
    x = 3,535,299,627.56/66,694.88
  6. Step 6: Final answer
    x = 53,007.06

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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.