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Finding the Fourth Proportional to 11,203.72, 16,813.10 and 4,629.89

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Solution

The fourth proportional to 11,203.72, 16,813.10 and 4,629.89 is: 6,947.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,203.72 : 16,813.10 = 4,629.89 : x
  2. Step 2: Convert to fraction form
    11,203.72/16,813.10 = 4,629.89/x
  3. Step 3: Cross multiply
    11,203.72x = 16,813.10 × 4,629.89
  4. Step 4: Simplify right side
    11,203.72x = 77,842,857.17
  5. Step 5: Solve for x
    x = 77,842,857.17/11,203.72
  6. Step 6: Final answer
    x = 6,947.95

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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.