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Finding the Fourth Proportional to 18,568.65, 25,623.13 and 10,911.11

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Solution

The fourth proportional to 18,568.65, 25,623.13 and 10,911.11 is: 15,056.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,568.65 : 25,623.13 = 10,911.11 : x
  2. Step 2: Convert to fraction form
    18,568.65/25,623.13 = 10,911.11/x
  3. Step 3: Cross multiply
    18,568.65x = 25,623.13 × 10,911.11
  4. Step 4: Simplify right side
    18,568.65x = 279,576,768.48
  5. Step 5: Solve for x
    x = 279,576,768.48/18,568.65
  6. Step 6: Final answer
    x = 15,056.39

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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.