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Finding the Fourth Proportional to 18,369.59, 25,353.41 and 11,299.50

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Solution

The fourth proportional to 18,369.59, 25,353.41 and 11,299.50 is: 15,595.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,369.59 : 25,353.41 = 11,299.50 : x
  2. Step 2: Convert to fraction form
    18,369.59/25,353.41 = 11,299.50/x
  3. Step 3: Cross multiply
    18,369.59x = 25,353.41 × 11,299.50
  4. Step 4: Simplify right side
    18,369.59x = 286,480,799.80
  5. Step 5: Solve for x
    x = 286,480,799.80/18,369.59
  6. Step 6: Final answer
    x = 15,595.39

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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.