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Finding the Fourth Proportional to 18,611.19, 25,682.74 and 10,654.16

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Solution

The fourth proportional to 18,611.19, 25,682.74 and 10,654.16 is: 14,702.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,611.19 : 25,682.74 = 10,654.16 : x
  2. Step 2: Convert to fraction form
    18,611.19/25,682.74 = 10,654.16/x
  3. Step 3: Cross multiply
    18,611.19x = 25,682.74 × 10,654.16
  4. Step 4: Simplify right side
    18,611.19x = 273,627,866.15
  5. Step 5: Solve for x
    x = 273,627,866.15/18,611.19
  6. Step 6: Final answer
    x = 14,702.33

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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.