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Finding the Fourth Proportional to 9,487.42, 13,092.34 and 5,238.42

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Solution

The fourth proportional to 9,487.42, 13,092.34 and 5,238.42 is: 7,228.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,487.42 : 13,092.34 = 5,238.42 : x
  2. Step 2: Convert to fraction form
    9,487.42/13,092.34 = 5,238.42/x
  3. Step 3: Cross multiply
    9,487.42x = 13,092.34 × 5,238.42
  4. Step 4: Simplify right side
    9,487.42x = 68,583,175.70
  5. Step 5: Solve for x
    x = 68,583,175.70/9,487.42
  6. Step 6: Final answer
    x = 7,228.85

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1.5x scale

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.