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Finding the Fourth Proportional to 18,589.78, 25,653 and 10,091.71

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Solution

The fourth proportional to 18,589.78, 25,653 and 10,091.71 is: 13,926.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,589.78 : 25,653 = 10,091.71 : x
  2. Step 2: Convert to fraction form
    18,589.78/25,653 = 10,091.71/x
  3. Step 3: Cross multiply
    18,589.78x = 25,653 × 10,091.71
  4. Step 4: Simplify right side
    18,589.78x = 258,882,636.63
  5. Step 5: Solve for x
    x = 258,882,636.63/18,589.78
  6. Step 6: Final answer
    x = 13,926.07

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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.