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Finding the Fourth Proportional to 66,993.36, 92,431.88 and 43,133.84

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Solution

The fourth proportional to 66,993.36, 92,431.88 and 43,133.84 is: 59,512.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,993.36 : 92,431.88 = 43,133.84 : x
  2. Step 2: Convert to fraction form
    66,993.36/92,431.88 = 43,133.84/x
  3. Step 3: Cross multiply
    66,993.36x = 92,431.88 × 43,133.84
  4. Step 4: Simplify right side
    66,993.36x = 3,986,941,922.82
  5. Step 5: Solve for x
    x = 3,986,941,922.82/66,993.36
  6. Step 6: Final answer
    x = 59,512.49

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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.