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Finding the Fourth Proportional to 23,186.99, 34,781.07 and 7,391.78

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Solution

The fourth proportional to 23,186.99, 34,781.07 and 7,391.78 is: 11,087.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,186.99 : 34,781.07 = 7,391.78 : x
  2. Step 2: Convert to fraction form
    23,186.99/34,781.07 = 7,391.78/x
  3. Step 3: Cross multiply
    23,186.99x = 34,781.07 × 7,391.78
  4. Step 4: Simplify right side
    23,186.99x = 257,094,017.60
  5. Step 5: Solve for x
    x = 257,094,017.60/23,186.99
  6. Step 6: Final answer
    x = 11,087.86

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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.