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Finding the Fourth Proportional to 11,745.35, 16,209.33 and 7,759.48

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Solution

The fourth proportional to 11,745.35, 16,209.33 and 7,759.48 is: 10,708.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,745.35 : 16,209.33 = 7,759.48 : x
  2. Step 2: Convert to fraction form
    11,745.35/16,209.33 = 7,759.48/x
  3. Step 3: Cross multiply
    11,745.35x = 16,209.33 × 7,759.48
  4. Step 4: Simplify right side
    11,745.35x = 125,775,931.43
  5. Step 5: Solve for x
    x = 125,775,931.43/11,745.35
  6. Step 6: Final answer
    x = 10,708.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.