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Finding the Fourth Proportional to 18,568.69, 25,623.60 and 11,015.71

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Solution

The fourth proportional to 18,568.69, 25,623.60 and 11,015.71 is: 15,200.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,568.69 : 25,623.60 = 11,015.71 : x
  2. Step 2: Convert to fraction form
    18,568.69/25,623.60 = 11,015.71/x
  3. Step 3: Cross multiply
    18,568.69x = 25,623.60 × 11,015.71
  4. Step 4: Simplify right side
    18,568.69x = 282,262,146.76
  5. Step 5: Solve for x
    x = 282,262,146.76/18,568.69
  6. Step 6: Final answer
    x = 15,200.97

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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.