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Finding the Fourth Proportional to 7,011.96, 9,676.72 and 4,028.39

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Solution

The fourth proportional to 7,011.96, 9,676.72 and 4,028.39 is: 5,559.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,011.96 : 9,676.72 = 4,028.39 : x
  2. Step 2: Convert to fraction form
    7,011.96/9,676.72 = 4,028.39/x
  3. Step 3: Cross multiply
    7,011.96x = 9,676.72 × 4,028.39
  4. Step 4: Simplify right side
    7,011.96x = 38,981,595.02
  5. Step 5: Solve for x
    x = 38,981,595.02/7,011.96
  6. Step 6: Final answer
    x = 5,559.30

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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.