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Finding the Fourth Proportional to 18,559.65, 25,611.22 and 11,006.70

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Solution

The fourth proportional to 18,559.65, 25,611.22 and 11,006.70 is: 15,188.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,559.65 : 25,611.22 = 11,006.70 : x
  2. Step 2: Convert to fraction form
    18,559.65/25,611.22 = 11,006.70/x
  3. Step 3: Cross multiply
    18,559.65x = 25,611.22 × 11,006.70
  4. Step 4: Simplify right side
    18,559.65x = 281,895,015.17
  5. Step 5: Solve for x
    x = 281,895,015.17/18,559.65
  6. Step 6: Final answer
    x = 15,188.60

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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.