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Finding the Fourth Proportional to 7,011.68, 9,676.34 and 4,028.12

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Solution

The fourth proportional to 7,011.68, 9,676.34 and 4,028.12 is: 5,558.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,011.68 : 9,676.34 = 4,028.12 : x
  2. Step 2: Convert to fraction form
    7,011.68/9,676.34 = 4,028.12/x
  3. Step 3: Cross multiply
    7,011.68x = 9,676.34 × 4,028.12
  4. Step 4: Simplify right side
    7,011.68x = 38,977,390.16
  5. Step 5: Solve for x
    x = 38,977,390.16/7,011.68
  6. Step 6: Final answer
    x = 5,558.93

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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.