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Finding the Fourth Proportional to 66,369.98, 91,590.54 and 36,561.98

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Solution

The fourth proportional to 66,369.98, 91,590.54 and 36,561.98 is: 50,455.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,369.98 : 91,590.54 = 36,561.98 : x
  2. Step 2: Convert to fraction form
    66,369.98/91,590.54 = 36,561.98/x
  3. Step 3: Cross multiply
    66,369.98x = 91,590.54 × 36,561.98
  4. Step 4: Simplify right side
    66,369.98x = 3,348,731,583.54
  5. Step 5: Solve for x
    x = 3,348,731,583.54/66,369.98
  6. Step 6: Final answer
    x = 50,455.51

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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.