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Finding the Fourth Proportional to 52,695.46, 79,074.37 and 19,438.90

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Solution

The fourth proportional to 52,695.46, 79,074.37 and 19,438.90 is: 29,169.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,695.46 : 79,074.37 = 19,438.90 : x
  2. Step 2: Convert to fraction form
    52,695.46/79,074.37 = 19,438.90/x
  3. Step 3: Cross multiply
    52,695.46x = 79,074.37 × 19,438.90
  4. Step 4: Simplify right side
    52,695.46x = 1,537,118,375.62
  5. Step 5: Solve for x
    x = 1,537,118,375.62/52,695.46
  6. Step 6: Final answer
    x = 29,169.85

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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.