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Finding the Fourth Proportional to 71,855.71, 99,160.91 and 41,658.61

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Solution

The fourth proportional to 71,855.71, 99,160.91 and 41,658.61 is: 57,488.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,855.71 : 99,160.91 = 41,658.61 : x
  2. Step 2: Convert to fraction form
    71,855.71/99,160.91 = 41,658.61/x
  3. Step 3: Cross multiply
    71,855.71x = 99,160.91 × 41,658.61
  4. Step 4: Simplify right side
    71,855.71x = 4,130,905,676.94
  5. Step 5: Solve for x
    x = 4,130,905,676.94/71,855.71
  6. Step 6: Final answer
    x = 57,488.90

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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.