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Finding the Fourth Proportional to 7,167.70, 9,889.82 and 4,023.68

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Solution

The fourth proportional to 7,167.70, 9,889.82 and 4,023.68 is: 5,551.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,167.70 : 9,889.82 = 4,023.68 : x
  2. Step 2: Convert to fraction form
    7,167.70/9,889.82 = 4,023.68/x
  3. Step 3: Cross multiply
    7,167.70x = 9,889.82 × 4,023.68
  4. Step 4: Simplify right side
    7,167.70x = 39,793,475.54
  5. Step 5: Solve for x
    x = 39,793,475.54/7,167.70
  6. Step 6: Final answer
    x = 5,551.78

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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.