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Finding the Fourth Proportional to 71,368.10, 106,922.55 and 43,633.70

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Solution

The fourth proportional to 71,368.10, 106,922.55 and 43,633.70 is: 65,371.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,368.10 : 106,922.55 = 43,633.70 : x
  2. Step 2: Convert to fraction form
    71,368.10/106,922.55 = 43,633.70/x
  3. Step 3: Cross multiply
    71,368.10x = 106,922.55 × 43,633.70
  4. Step 4: Simplify right side
    71,368.10x = 4,665,426,469.94
  5. Step 5: Solve for x
    x = 4,665,426,469.94/71,368.10
  6. Step 6: Final answer
    x = 65,371.31

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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.