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Finding the Fourth Proportional to 19,487.46, 29,236.05 and 5,636.46

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Solution

The fourth proportional to 19,487.46, 29,236.05 and 5,636.46 is: 8,456.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,487.46 : 29,236.05 = 5,636.46 : x
  2. Step 2: Convert to fraction form
    19,487.46/29,236.05 = 5,636.46/x
  3. Step 3: Cross multiply
    19,487.46x = 29,236.05 × 5,636.46
  4. Step 4: Simplify right side
    19,487.46x = 164,787,826.38
  5. Step 5: Solve for x
    x = 164,787,826.38/19,487.46
  6. Step 6: Final answer
    x = 8,456.10

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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.