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Finding the Fourth Proportional to 71,044.40, 106,426.20 and 36,009.20

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Solution

The fourth proportional to 71,044.40, 106,426.20 and 36,009.20 is: 53,942.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,044.40 : 106,426.20 = 36,009.20 : x
  2. Step 2: Convert to fraction form
    71,044.40/106,426.20 = 36,009.20/x
  3. Step 3: Cross multiply
    71,044.40x = 106,426.20 × 36,009.20
  4. Step 4: Simplify right side
    71,044.40x = 3,832,322,321.04
  5. Step 5: Solve for x
    x = 3,832,322,321.04/71,044.40
  6. Step 6: Final answer
    x = 53,942.64

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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.