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Finding the Fourth Proportional to 7,021.45, 9,676.28 and 5,028.54

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Solution

The fourth proportional to 7,021.45, 9,676.28 and 5,028.54 is: 6,929.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021.45 : 9,676.28 = 5,028.54 : x
  2. Step 2: Convert to fraction form
    7,021.45/9,676.28 = 5,028.54/x
  3. Step 3: Cross multiply
    7,021.45x = 9,676.28 × 5,028.54
  4. Step 4: Simplify right side
    7,021.45x = 48,657,587.67
  5. Step 5: Solve for x
    x = 48,657,587.67/7,021.45
  6. Step 6: Final answer
    x = 6,929.85

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.