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Finding the Fourth Proportional to 66,553.11, 91,842.59 and 36,338.34

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Solution

The fourth proportional to 66,553.11, 91,842.59 and 36,338.34 is: 50,146.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,553.11 : 91,842.59 = 36,338.34 : x
  2. Step 2: Convert to fraction form
    66,553.11/91,842.59 = 36,338.34/x
  3. Step 3: Cross multiply
    66,553.11x = 91,842.59 × 36,338.34
  4. Step 4: Simplify right side
    66,553.11x = 3,337,406,871.13
  5. Step 5: Solve for x
    x = 3,337,406,871.13/66,553.11
  6. Step 6: Final answer
    x = 50,146.52

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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.