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Finding the Fourth Proportional to 67,207.89, 92,760.90 and 40,351.53

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Solution

The fourth proportional to 67,207.89, 92,760.90 and 40,351.53 is: 55,693.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,207.89 : 92,760.90 = 40,351.53 : x
  2. Step 2: Convert to fraction form
    67,207.89/92,760.90 = 40,351.53/x
  3. Step 3: Cross multiply
    67,207.89x = 92,760.90 × 40,351.53
  4. Step 4: Simplify right side
    67,207.89x = 3,743,044,239.18
  5. Step 5: Solve for x
    x = 3,743,044,239.18/67,207.89
  6. Step 6: Final answer
    x = 55,693.52

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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.