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Finding the Fourth Proportional to 18,561.61, 25,619.72 and 10,608.51

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Solution

The fourth proportional to 18,561.61, 25,619.72 and 10,608.51 is: 14,642.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,561.61 : 25,619.72 = 10,608.51 : x
  2. Step 2: Convert to fraction form
    18,561.61/25,619.72 = 10,608.51/x
  3. Step 3: Cross multiply
    18,561.61x = 25,619.72 × 10,608.51
  4. Step 4: Simplify right side
    18,561.61x = 271,787,055.82
  5. Step 5: Solve for x
    x = 271,787,055.82/18,561.61
  6. Step 6: Final answer
    x = 14,642.43

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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.