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Finding the Fourth Proportional to 3,952.56, 5,925.12 and 1,353.64

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Solution

The fourth proportional to 3,952.56, 5,925.12 and 1,353.64 is: 2,029.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,952.56 : 5,925.12 = 1,353.64 : x
  2. Step 2: Convert to fraction form
    3,952.56/5,925.12 = 1,353.64/x
  3. Step 3: Cross multiply
    3,952.56x = 5,925.12 × 1,353.64
  4. Step 4: Simplify right side
    3,952.56x = 8,020,479.44
  5. Step 5: Solve for x
    x = 8,020,479.44/3,952.56
  6. Step 6: Final answer
    x = 2,029.19

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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.