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Finding the Fourth Proportional to 18,774.57, 28,160.78 and 6,294.09

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Solution

The fourth proportional to 18,774.57, 28,160.78 and 6,294.09 is: 9,440.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,774.57 : 28,160.78 = 6,294.09 : x
  2. Step 2: Convert to fraction form
    18,774.57/28,160.78 = 6,294.09/x
  3. Step 3: Cross multiply
    18,774.57x = 28,160.78 × 6,294.09
  4. Step 4: Simplify right side
    18,774.57x = 177,246,452.32
  5. Step 5: Solve for x
    x = 177,246,452.32/18,774.57
  6. Step 6: Final answer
    x = 9,440.77

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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.