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Finding the Fourth Proportional to 9,520.97, 13,143.71 and 5,986.13

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Solution

The fourth proportional to 9,520.97, 13,143.71 and 5,986.13 is: 8,263.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,520.97 : 13,143.71 = 5,986.13 : x
  2. Step 2: Convert to fraction form
    9,520.97/13,143.71 = 5,986.13/x
  3. Step 3: Cross multiply
    9,520.97x = 13,143.71 × 5,986.13
  4. Step 4: Simplify right side
    9,520.97x = 78,679,956.74
  5. Step 5: Solve for x
    x = 78,679,956.74/9,520.97
  6. Step 6: Final answer
    x = 8,263.86

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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.