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Finding the Fourth Proportional to 17,630.75, 26,454.72 and 7,768.79

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Solution

The fourth proportional to 17,630.75, 26,454.72 and 7,768.79 is: 11,656.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,630.75 : 26,454.72 = 7,768.79 : x
  2. Step 2: Convert to fraction form
    17,630.75/26,454.72 = 7,768.79/x
  3. Step 3: Cross multiply
    17,630.75x = 26,454.72 × 7,768.79
  4. Step 4: Simplify right side
    17,630.75x = 205,521,164.19
  5. Step 5: Solve for x
    x = 205,521,164.19/17,630.75
  6. Step 6: Final answer
    x = 11,656.97

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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.