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Finding the Fourth Proportional to 66,928.92, 92,361.42 and 36,713.40

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Solution

The fourth proportional to 66,928.92, 92,361.42 and 36,713.40 is: 50,664.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,928.92 : 92,361.42 = 36,713.40 : x
  2. Step 2: Convert to fraction form
    66,928.92/92,361.42 = 36,713.40/x
  3. Step 3: Cross multiply
    66,928.92x = 92,361.42 × 36,713.40
  4. Step 4: Simplify right side
    66,928.92x = 3,390,901,757.03
  5. Step 5: Solve for x
    x = 3,390,901,757.03/66,928.92
  6. Step 6: Final answer
    x = 50,664.22

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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.