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Finding the Fourth Proportional to 66,921.22, 92,351.42 and 36,706.80

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Solution

The fourth proportional to 66,921.22, 92,351.42 and 36,706.80 is: 50,655.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,921.22 : 92,351.42 = 36,706.80 : x
  2. Step 2: Convert to fraction form
    66,921.22/92,351.42 = 36,706.80/x
  3. Step 3: Cross multiply
    66,921.22x = 92,351.42 × 36,706.80
  4. Step 4: Simplify right side
    66,921.22x = 3,389,925,103.66
  5. Step 5: Solve for x
    x = 3,389,925,103.66/66,921.22
  6. Step 6: Final answer
    x = 50,655.46

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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.