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Finding the Fourth Proportional to 3,707.64, 5,561.46 and 1,515.88

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Solution

The fourth proportional to 3,707.64, 5,561.46 and 1,515.88 is: 2,273.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,707.64 : 5,561.46 = 1,515.88 : x
  2. Step 2: Convert to fraction form
    3,707.64/5,561.46 = 1,515.88/x
  3. Step 3: Cross multiply
    3,707.64x = 5,561.46 × 1,515.88
  4. Step 4: Simplify right side
    3,707.64x = 8,430,505.98
  5. Step 5: Solve for x
    x = 8,430,505.98/3,707.64
  6. Step 6: Final answer
    x = 2,273.82

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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.