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Finding the Fourth Proportional to 3,572.64, 4,930.56 and 2,001

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Solution

The fourth proportional to 3,572.64, 4,930.56 and 2,001 is: 2,761.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,572.64 : 4,930.56 = 2,001 : x
  2. Step 2: Convert to fraction form
    3,572.64/4,930.56 = 2,001/x
  3. Step 3: Cross multiply
    3,572.64x = 4,930.56 × 2,001
  4. Step 4: Simplify right side
    3,572.64x = 9,866,050.56
  5. Step 5: Solve for x
    x = 9,866,050.56/3,572.64
  6. Step 6: Final answer
    x = 2,761.56

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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.