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Finding the Fourth Proportional to 13,510.52, 18,644.84 and 8,474.96

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Solution

The fourth proportional to 13,510.52, 18,644.84 and 8,474.96 is: 11,695.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,510.52 : 18,644.84 = 8,474.96 : x
  2. Step 2: Convert to fraction form
    13,510.52/18,644.84 = 8,474.96/x
  3. Step 3: Cross multiply
    13,510.52x = 18,644.84 × 8,474.96
  4. Step 4: Simplify right side
    13,510.52x = 158,014,137.61
  5. Step 5: Solve for x
    x = 158,014,137.61/13,510.52
  6. Step 6: Final answer
    x = 11,695.63

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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.