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Finding the Fourth Proportional to 8,924.70, 13,387.19 and 3,380.64

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Solution

The fourth proportional to 8,924.70, 13,387.19 and 3,380.64 is: 5,071.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,924.70 : 13,387.19 = 3,380.64 : x
  2. Step 2: Convert to fraction form
    8,924.70/13,387.19 = 3,380.64/x
  3. Step 3: Cross multiply
    8,924.70x = 13,387.19 × 3,380.64
  4. Step 4: Simplify right side
    8,924.70x = 45,257,253.10
  5. Step 5: Solve for x
    x = 45,257,253.10/8,924.70
  6. Step 6: Final answer
    x = 5,071.01

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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.