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Finding the Fourth Proportional to 17,093.70, 25,640.55 and 4,781.70

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Solution

The fourth proportional to 17,093.70, 25,640.55 and 4,781.70 is: 7,172.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,093.70 : 25,640.55 = 4,781.70 : x
  2. Step 2: Convert to fraction form
    17,093.70/25,640.55 = 4,781.70/x
  3. Step 3: Cross multiply
    17,093.70x = 25,640.55 × 4,781.70
  4. Step 4: Simplify right side
    17,093.70x = 122,605,417.94
  5. Step 5: Solve for x
    x = 122,605,417.94/17,093.70
  6. Step 6: Final answer
    x = 7,172.55

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1.5x scale

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.