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Finding the Fourth Proportional to 8,661.88, 11,947.26 and 8,532.28

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Solution

The fourth proportional to 8,661.88, 11,947.26 and 8,532.28 is: 11,768.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,661.88 : 11,947.26 = 8,532.28 : x
  2. Step 2: Convert to fraction form
    8,661.88/11,947.26 = 8,532.28/x
  3. Step 3: Cross multiply
    8,661.88x = 11,947.26 × 8,532.28
  4. Step 4: Simplify right side
    8,661.88x = 101,937,367.55
  5. Step 5: Solve for x
    x = 101,937,367.55/8,661.88
  6. Step 6: Final answer
    x = 11,768.50

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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.