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Finding the Fourth Proportional to 18,794.59, 28,194.51 and 7,702.85

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Solution

The fourth proportional to 18,794.59, 28,194.51 and 7,702.85 is: 11,555.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,794.59 : 28,194.51 = 7,702.85 : x
  2. Step 2: Convert to fraction form
    18,794.59/28,194.51 = 7,702.85/x
  3. Step 3: Cross multiply
    18,794.59x = 28,194.51 × 7,702.85
  4. Step 4: Simplify right side
    18,794.59x = 217,178,081.35
  5. Step 5: Solve for x
    x = 217,178,081.35/18,794.59
  6. Step 6: Final answer
    x = 11,555.35

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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.