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Finding the Fourth Proportional to 67,438.29, 92,968.11 and 53,073.21

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Solution

The fourth proportional to 67,438.29, 92,968.11 and 53,073.21 is: 73,164.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,438.29 : 92,968.11 = 53,073.21 : x
  2. Step 2: Convert to fraction form
    67,438.29/92,968.11 = 53,073.21/x
  3. Step 3: Cross multiply
    67,438.29x = 92,968.11 × 53,073.21
  4. Step 4: Simplify right side
    67,438.29x = 4,934,116,025.33
  5. Step 5: Solve for x
    x = 4,934,116,025.33/67,438.29
  6. Step 6: Final answer
    x = 73,164.90

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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.