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Finding the Fourth Proportional to 67,266.88, 92,828.31 and 38,988.97

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Solution

The fourth proportional to 67,266.88, 92,828.31 and 38,988.97 is: 53,804.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,266.88 : 92,828.31 = 38,988.97 : x
  2. Step 2: Convert to fraction form
    67,266.88/92,828.31 = 38,988.97/x
  3. Step 3: Cross multiply
    67,266.88x = 92,828.31 × 38,988.97
  4. Step 4: Simplify right side
    67,266.88x = 3,619,280,193.74
  5. Step 5: Solve for x
    x = 3,619,280,193.74/67,266.88
  6. Step 6: Final answer
    x = 53,804.79

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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.