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Finding the Fourth Proportional to 21,893.54, 32,845.10 and 7,103.94

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Solution

The fourth proportional to 21,893.54, 32,845.10 and 7,103.94 is: 10,657.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,893.54 : 32,845.10 = 7,103.94 : x
  2. Step 2: Convert to fraction form
    21,893.54/32,845.10 = 7,103.94/x
  3. Step 3: Cross multiply
    21,893.54x = 32,845.10 × 7,103.94
  4. Step 4: Simplify right side
    21,893.54x = 233,329,584.17
  5. Step 5: Solve for x
    x = 233,329,584.17/21,893.54
  6. Step 6: Final answer
    x = 10,657.47

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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.