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Finding the Fourth Proportional to 12,049.88, 18,085.62 and 10,087.80

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Solution

The fourth proportional to 12,049.88, 18,085.62 and 10,087.80 is: 15,140.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,049.88 : 18,085.62 = 10,087.80 : x
  2. Step 2: Convert to fraction form
    12,049.88/18,085.62 = 10,087.80/x
  3. Step 3: Cross multiply
    12,049.88x = 18,085.62 × 10,087.80
  4. Step 4: Simplify right side
    12,049.88x = 182,444,117.44
  5. Step 5: Solve for x
    x = 182,444,117.44/12,049.88
  6. Step 6: Final answer
    x = 15,140.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.