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Finding the Fourth Proportional to 9,392.87, 12,961.26 and 5,615.27

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Solution

The fourth proportional to 9,392.87, 12,961.26 and 5,615.27 is: 7,748.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,392.87 : 12,961.26 = 5,615.27 : x
  2. Step 2: Convert to fraction form
    9,392.87/12,961.26 = 5,615.27/x
  3. Step 3: Cross multiply
    9,392.87x = 12,961.26 × 5,615.27
  4. Step 4: Simplify right side
    9,392.87x = 72,780,909.63
  5. Step 5: Solve for x
    x = 72,780,909.63/9,392.87
  6. Step 6: Final answer
    x = 7,748.53

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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.