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Finding the Fourth Proportional to 66,904.30, 92,329.20 and 36,687.82

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Solution

The fourth proportional to 66,904.30, 92,329.20 and 36,687.82 is: 50,629.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,904.30 : 92,329.20 = 36,687.82 : x
  2. Step 2: Convert to fraction form
    66,904.30/92,329.20 = 36,687.82/x
  3. Step 3: Cross multiply
    66,904.30x = 92,329.20 × 36,687.82
  4. Step 4: Simplify right side
    66,904.30x = 3,387,356,425.26
  5. Step 5: Solve for x
    x = 3,387,356,425.26/66,904.30
  6. Step 6: Final answer
    x = 50,629.88

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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.