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Finding the Fourth Proportional to 21,895.48, 32,843.19 and 7,105.87

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Solution

The fourth proportional to 21,895.48, 32,843.19 and 7,105.87 is: 10,658.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,895.48 : 32,843.19 = 7,105.87 : x
  2. Step 2: Convert to fraction form
    21,895.48/32,843.19 = 7,105.87/x
  3. Step 3: Cross multiply
    21,895.48x = 32,843.19 × 7,105.87
  4. Step 4: Simplify right side
    21,895.48x = 233,379,438.53
  5. Step 5: Solve for x
    x = 233,379,438.53/21,895.48
  6. Step 6: Final answer
    x = 10,658.80

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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.