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Finding the Fourth Proportional to 66,581.82, 91,878.84 and 36,361.02

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Solution

The fourth proportional to 66,581.82, 91,878.84 and 36,361.02 is: 50,175.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,581.82 : 91,878.84 = 36,361.02 : x
  2. Step 2: Convert to fraction form
    66,581.82/91,878.84 = 36,361.02/x
  3. Step 3: Cross multiply
    66,581.82x = 91,878.84 × 36,361.02
  4. Step 4: Simplify right side
    66,581.82x = 3,340,808,338.82
  5. Step 5: Solve for x
    x = 3,340,808,338.82/66,581.82
  6. Step 6: Final answer
    x = 50,175.98

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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.