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Finding the Fourth Proportional to 8,913.33, 13,369.71 and 4,236.71

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Solution

The fourth proportional to 8,913.33, 13,369.71 and 4,236.71 is: 6,354.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,913.33 : 13,369.71 = 4,236.71 : x
  2. Step 2: Convert to fraction form
    8,913.33/13,369.71 = 4,236.71/x
  3. Step 3: Cross multiply
    8,913.33x = 13,369.71 × 4,236.71
  4. Step 4: Simplify right side
    8,913.33x = 56,643,584.05
  5. Step 5: Solve for x
    x = 56,643,584.05/8,913.33
  6. Step 6: Final answer
    x = 6,354.93

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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.