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Finding the Fourth Proportional to 66,472.22, 91,747.42 and 38,194.32

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Solution

The fourth proportional to 66,472.22, 91,747.42 and 38,194.32 is: 52,717.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,472.22 : 91,747.42 = 38,194.32 : x
  2. Step 2: Convert to fraction form
    66,472.22/91,747.42 = 38,194.32/x
  3. Step 3: Cross multiply
    66,472.22x = 91,747.42 × 38,194.32
  4. Step 4: Simplify right side
    66,472.22x = 3,504,230,318.65
  5. Step 5: Solve for x
    x = 3,504,230,318.65/66,472.22
  6. Step 6: Final answer
    x = 52,717.22

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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.