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Finding the Fourth Proportional to 16,918.92, 25,384.39 and 7,558.08

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Solution

The fourth proportional to 16,918.92, 25,384.39 and 7,558.08 is: 11,339.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,918.92 : 25,384.39 = 7,558.08 : x
  2. Step 2: Convert to fraction form
    16,918.92/25,384.39 = 7,558.08/x
  3. Step 3: Cross multiply
    16,918.92x = 25,384.39 × 7,558.08
  4. Step 4: Simplify right side
    16,918.92x = 191,857,250.37
  5. Step 5: Solve for x
    x = 191,857,250.37/16,918.92
  6. Step 6: Final answer
    x = 11,339.80

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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.