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Finding the Fourth Proportional to 66,473.22, 91,748.79 and 38,195.31

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Solution

The fourth proportional to 66,473.22, 91,748.79 and 38,195.31 is: 52,718.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,473.22 : 91,748.79 = 38,195.31 : x
  2. Step 2: Convert to fraction form
    66,473.22/91,748.79 = 38,195.31/x
  3. Step 3: Cross multiply
    66,473.22x = 91,748.79 × 38,195.31
  4. Step 4: Simplify right side
    66,473.22x = 3,504,373,476.17
  5. Step 5: Solve for x
    x = 3,504,373,476.17/66,473.22
  6. Step 6: Final answer
    x = 52,718.58

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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.