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Finding the Fourth Proportional to 67,428.92, 101,274.62 and 54,958.16

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Solution

The fourth proportional to 67,428.92, 101,274.62 and 54,958.16 is: 82,544.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,428.92 : 101,274.62 = 54,958.16 : x
  2. Step 2: Convert to fraction form
    67,428.92/101,274.62 = 54,958.16/x
  3. Step 3: Cross multiply
    67,428.92x = 101,274.62 × 54,958.16
  4. Step 4: Simplify right side
    67,428.92x = 5,565,866,769.90
  5. Step 5: Solve for x
    x = 5,565,866,769.90/67,428.92
  6. Step 6: Final answer
    x = 82,544.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.