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Finding the Fourth Proportional to 18,593.34, 25,658.55 and 11,521.50

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Solution

The fourth proportional to 18,593.34, 25,658.55 and 11,521.50 is: 15,899.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,593.34 : 25,658.55 = 11,521.50 : x
  2. Step 2: Convert to fraction form
    18,593.34/25,658.55 = 11,521.50/x
  3. Step 3: Cross multiply
    18,593.34x = 25,658.55 × 11,521.50
  4. Step 4: Simplify right side
    18,593.34x = 295,624,983.83
  5. Step 5: Solve for x
    x = 295,624,983.83/18,593.34
  6. Step 6: Final answer
    x = 15,899.51

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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.