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Finding the Fourth Proportional to 66,885.61, 92,305.05 and 40,022.97

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Solution

The fourth proportional to 66,885.61, 92,305.05 and 40,022.97 is: 55,233.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,885.61 : 92,305.05 = 40,022.97 : x
  2. Step 2: Convert to fraction form
    66,885.61/92,305.05 = 40,022.97/x
  3. Step 3: Cross multiply
    66,885.61x = 92,305.05 × 40,022.97
  4. Step 4: Simplify right side
    66,885.61x = 3,694,321,585.36
  5. Step 5: Solve for x
    x = 3,694,321,585.36/66,885.61
  6. Step 6: Final answer
    x = 55,233.43

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1.5x scale

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.