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Finding the Fourth Proportional to 71,227.55, 106,801.88 and 29,137.19

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Solution

The fourth proportional to 71,227.55, 106,801.88 and 29,137.19 is: 43,689.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,227.55 : 106,801.88 = 29,137.19 : x
  2. Step 2: Convert to fraction form
    71,227.55/106,801.88 = 29,137.19/x
  3. Step 3: Cross multiply
    71,227.55x = 106,801.88 × 29,137.19
  4. Step 4: Simplify right side
    71,227.55x = 3,111,905,990.22
  5. Step 5: Solve for x
    x = 3,111,905,990.22/71,227.55
  6. Step 6: Final answer
    x = 43,689.64

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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.