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Finding the Fourth Proportional to 18,603.65, 25,672.33 and 11,529.92

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Solution

The fourth proportional to 18,603.65, 25,672.33 and 11,529.92 is: 15,910.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.65 : 25,672.33 = 11,529.92 : x
  2. Step 2: Convert to fraction form
    18,603.65/25,672.33 = 11,529.92/x
  3. Step 3: Cross multiply
    18,603.65x = 25,672.33 × 11,529.92
  4. Step 4: Simplify right side
    18,603.65x = 295,999,911.11
  5. Step 5: Solve for x
    x = 295,999,911.11/18,603.65
  6. Step 6: Final answer
    x = 15,910.85

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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.