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Finding the Fourth Proportional to 66,507.44, 91,781.57 and 52,184.43

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Solution

The fourth proportional to 66,507.44, 91,781.57 and 52,184.43 is: 72,015.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,507.44 : 91,781.57 = 52,184.43 : x
  2. Step 2: Convert to fraction form
    66,507.44/91,781.57 = 52,184.43/x
  3. Step 3: Cross multiply
    66,507.44x = 91,781.57 × 52,184.43
  4. Step 4: Simplify right side
    66,507.44x = 4,789,569,045.42
  5. Step 5: Solve for x
    x = 4,789,569,045.42/66,507.44
  6. Step 6: Final answer
    x = 72,015.54

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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.