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Finding the Fourth Proportional to 66,475.72, 91,736.62 and 36,261.08

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Solution

The fourth proportional to 66,475.72, 91,736.62 and 36,261.08 is: 50,040.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,475.72 : 91,736.62 = 36,261.08 : x
  2. Step 2: Convert to fraction form
    66,475.72/91,736.62 = 36,261.08/x
  3. Step 3: Cross multiply
    66,475.72x = 91,736.62 × 36,261.08
  4. Step 4: Simplify right side
    66,475.72x = 3,326,468,916.75
  5. Step 5: Solve for x
    x = 3,326,468,916.75/66,475.72
  6. Step 6: Final answer
    x = 50,040.36

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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.