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Finding the Fourth Proportional to 3,553.54, 4,903.05 and 2,156.02

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Solution

The fourth proportional to 3,553.54, 4,903.05 and 2,156.02 is: 2,974.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,553.54 : 4,903.05 = 2,156.02 : x
  2. Step 2: Convert to fraction form
    3,553.54/4,903.05 = 2,156.02/x
  3. Step 3: Cross multiply
    3,553.54x = 4,903.05 × 2,156.02
  4. Step 4: Simplify right side
    3,553.54x = 10,571,073.86
  5. Step 5: Solve for x
    x = 10,571,073.86/3,553.54
  6. Step 6: Final answer
    x = 2,974.80

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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.