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Finding the Fourth Proportional to 18,561.69, 25,611.50 and 10,601.01

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Solution

The fourth proportional to 18,561.69, 25,611.50 and 10,601.01 is: 14,627.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,561.69 : 25,611.50 = 10,601.01 : x
  2. Step 2: Convert to fraction form
    18,561.69/25,611.50 = 10,601.01/x
  3. Step 3: Cross multiply
    18,561.69x = 25,611.50 × 10,601.01
  4. Step 4: Simplify right side
    18,561.69x = 271,507,794.12
  5. Step 5: Solve for x
    x = 271,507,794.12/18,561.69
  6. Step 6: Final answer
    x = 14,627.32

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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.