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Finding the Fourth Proportional to 67,266.75, 92,828.12 and 38,988.84

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Solution

The fourth proportional to 67,266.75, 92,828.12 and 38,988.84 is: 53,804.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,266.75 : 92,828.12 = 38,988.84 : x
  2. Step 2: Convert to fraction form
    67,266.75/92,828.12 = 38,988.84/x
  3. Step 3: Cross multiply
    67,266.75x = 92,828.12 × 38,988.84
  4. Step 4: Simplify right side
    67,266.75x = 3,619,260,523.24
  5. Step 5: Solve for x
    x = 3,619,260,523.24/67,266.75
  6. Step 6: Final answer
    x = 53,804.60

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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.