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Finding the Fourth Proportional to 18,593.34, 25,658.49 and 10,209.78

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Solution

The fourth proportional to 18,593.34, 25,658.49 and 10,209.78 is: 14,089.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,593.34 : 25,658.49 = 10,209.78 : x
  2. Step 2: Convert to fraction form
    18,593.34/25,658.49 = 10,209.78/x
  3. Step 3: Cross multiply
    18,593.34x = 25,658.49 × 10,209.78
  4. Step 4: Simplify right side
    18,593.34x = 261,967,538.03
  5. Step 5: Solve for x
    x = 261,967,538.03/18,593.34
  6. Step 6: Final answer
    x = 14,089.32

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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.