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Finding the Fourth Proportional to 67,142.81, 92,655.20 and 36,928.11

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Solution

The fourth proportional to 67,142.81, 92,655.20 and 36,928.11 is: 50,959.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,142.81 : 92,655.20 = 36,928.11 : x
  2. Step 2: Convert to fraction form
    67,142.81/92,655.20 = 36,928.11/x
  3. Step 3: Cross multiply
    67,142.81x = 92,655.20 × 36,928.11
  4. Step 4: Simplify right side
    67,142.81x = 3,421,581,233.03
  5. Step 5: Solve for x
    x = 3,421,581,233.03/67,142.81
  6. Step 6: Final answer
    x = 50,959.76

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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.