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Finding the Fourth Proportional to 19,296.67, 28,928.36 and 7,458.75

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Solution

The fourth proportional to 19,296.67, 28,928.36 and 7,458.75 is: 11,181.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,296.67 : 28,928.36 = 7,458.75 : x
  2. Step 2: Convert to fraction form
    19,296.67/28,928.36 = 7,458.75/x
  3. Step 3: Cross multiply
    19,296.67x = 28,928.36 × 7,458.75
  4. Step 4: Simplify right side
    19,296.67x = 215,769,241.86
  5. Step 5: Solve for x
    x = 215,769,241.86/19,296.67
  6. Step 6: Final answer
    x = 11,181.69

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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.