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Finding the Fourth Proportional to 18,593.88, 25,660.14 and 10,638.68

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Solution

The fourth proportional to 18,593.88, 25,660.14 and 10,638.68 is: 14,681.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,593.88 : 25,660.14 = 10,638.68 : x
  2. Step 2: Convert to fraction form
    18,593.88/25,660.14 = 10,638.68/x
  3. Step 3: Cross multiply
    18,593.88x = 25,660.14 × 10,638.68
  4. Step 4: Simplify right side
    18,593.88x = 272,989,889.91
  5. Step 5: Solve for x
    x = 272,989,889.91/18,593.88
  6. Step 6: Final answer
    x = 14,681.71

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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.