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Finding the Fourth Proportional to 66,536.40, 91,821.29 and 36,321.99

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Solution

The fourth proportional to 66,536.40, 91,821.29 and 36,321.99 is: 50,124.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,536.40 : 91,821.29 = 36,321.99 : x
  2. Step 2: Convert to fraction form
    66,536.40/91,821.29 = 36,321.99/x
  3. Step 3: Cross multiply
    66,536.40x = 91,821.29 × 36,321.99
  4. Step 4: Simplify right side
    66,536.40x = 3,335,131,977.17
  5. Step 5: Solve for x
    x = 3,335,131,977.17/66,536.40
  6. Step 6: Final answer
    x = 50,124.92

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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.