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Finding the Fourth Proportional to 14,392.72, 21,583.62 and 5,626.54

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Solution

The fourth proportional to 14,392.72, 21,583.62 and 5,626.54 is: 8,437.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,392.72 : 21,583.62 = 5,626.54 : x
  2. Step 2: Convert to fraction form
    14,392.72/21,583.62 = 5,626.54/x
  3. Step 3: Cross multiply
    14,392.72x = 21,583.62 × 5,626.54
  4. Step 4: Simplify right side
    14,392.72x = 121,441,101.27
  5. Step 5: Solve for x
    x = 121,441,101.27/14,392.72
  6. Step 6: Final answer
    x = 8,437.68

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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.