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Finding the Fourth Proportional to 3,553.48, 5,329.70 and 956.60

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Solution

The fourth proportional to 3,553.48, 5,329.70 and 956.60 is: 1,434.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,553.48 : 5,329.70 = 956.60 : x
  2. Step 2: Convert to fraction form
    3,553.48/5,329.70 = 956.60/x
  3. Step 3: Cross multiply
    3,553.48x = 5,329.70 × 956.60
  4. Step 4: Simplify right side
    3,553.48x = 5,098,391.02
  5. Step 5: Solve for x
    x = 5,098,391.02/3,553.48
  6. Step 6: Final answer
    x = 1,434.76

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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.