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Finding the Fourth Proportional to 27,185.96, 40,785.64 and 21,968.28

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Solution

The fourth proportional to 27,185.96, 40,785.64 and 21,968.28 is: 32,957.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,185.96 : 40,785.64 = 21,968.28 : x
  2. Step 2: Convert to fraction form
    27,185.96/40,785.64 = 21,968.28/x
  3. Step 3: Cross multiply
    27,185.96x = 40,785.64 × 21,968.28
  4. Step 4: Simplify right side
    27,185.96x = 895,990,304.58
  5. Step 5: Solve for x
    x = 895,990,304.58/27,185.96
  6. Step 6: Final answer
    x = 32,957.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.