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Finding the Fourth Proportional to 71,367.60, 106,936.20 and 45,025.20

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Solution

The fourth proportional to 71,367.60, 106,936.20 and 45,025.20 is: 67,465.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,367.60 : 106,936.20 = 45,025.20 : x
  2. Step 2: Convert to fraction form
    71,367.60/106,936.20 = 45,025.20/x
  3. Step 3: Cross multiply
    71,367.60x = 106,936.20 × 45,025.20
  4. Step 4: Simplify right side
    71,367.60x = 4,814,823,792.24
  5. Step 5: Solve for x
    x = 4,814,823,792.24/71,367.60
  6. Step 6: Final answer
    x = 67,465.12

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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.