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Finding the Fourth Proportional to 91,801.96, 137,592.21 and 47,404.51

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Solution

The fourth proportional to 91,801.96, 137,592.21 and 47,404.51 is: 71,049.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,801.96 : 137,592.21 = 47,404.51 : x
  2. Step 2: Convert to fraction form
    91,801.96/137,592.21 = 47,404.51/x
  3. Step 3: Cross multiply
    91,801.96x = 137,592.21 × 47,404.51
  4. Step 4: Simplify right side
    91,801.96x = 6,522,491,128.65
  5. Step 5: Solve for x
    x = 6,522,491,128.65/91,801.96
  6. Step 6: Final answer
    x = 71,049.59

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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.