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Finding the Fourth Proportional to 7,572.90, 11,355.30 and 2,642.70

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Solution

The fourth proportional to 7,572.90, 11,355.30 and 2,642.70 is: 3,962.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,572.90 : 11,355.30 = 2,642.70 : x
  2. Step 2: Convert to fraction form
    7,572.90/11,355.30 = 2,642.70/x
  3. Step 3: Cross multiply
    7,572.90x = 11,355.30 × 2,642.70
  4. Step 4: Simplify right side
    7,572.90x = 30,008,651.31
  5. Step 5: Solve for x
    x = 30,008,651.31/7,572.90
  6. Step 6: Final answer
    x = 3,962.64

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.