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Finding the Fourth Proportional to 18,691.59, 25,794.40 and 10,734.34

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Solution

The fourth proportional to 18,691.59, 25,794.40 and 10,734.34 is: 14,813.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,691.59 : 25,794.40 = 10,734.34 : x
  2. Step 2: Convert to fraction form
    18,691.59/25,794.40 = 10,734.34/x
  3. Step 3: Cross multiply
    18,691.59x = 25,794.40 × 10,734.34
  4. Step 4: Simplify right side
    18,691.59x = 276,885,836.87
  5. Step 5: Solve for x
    x = 276,885,836.87/18,691.59
  6. Step 6: Final answer
    x = 14,813.39

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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.