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Finding the Fourth Proportional to 67,209.76, 92,745.93 and 36,989.30

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Solution

The fourth proportional to 67,209.76, 92,745.93 and 36,989.30 is: 51,043.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,209.76 : 92,745.93 = 36,989.30 : x
  2. Step 2: Convert to fraction form
    67,209.76/92,745.93 = 36,989.30/x
  3. Step 3: Cross multiply
    67,209.76x = 92,745.93 × 36,989.30
  4. Step 4: Simplify right side
    67,209.76x = 3,430,607,028.55
  5. Step 5: Solve for x
    x = 3,430,607,028.55/67,209.76
  6. Step 6: Final answer
    x = 51,043.29

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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.