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Finding the Fourth Proportional to 17,951.84, 26,931.36 and 5,472.80

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Solution

The fourth proportional to 17,951.84, 26,931.36 and 5,472.80 is: 8,210.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,951.84 : 26,931.36 = 5,472.80 : x
  2. Step 2: Convert to fraction form
    17,951.84/26,931.36 = 5,472.80/x
  3. Step 3: Cross multiply
    17,951.84x = 26,931.36 × 5,472.80
  4. Step 4: Simplify right side
    17,951.84x = 147,389,947.01
  5. Step 5: Solve for x
    x = 147,389,947.01/17,951.84
  6. Step 6: Final answer
    x = 8,210.30

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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.