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Finding the Fourth Proportional to 7,766.96, 10,718.07 and 4,230.20

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Solution

The fourth proportional to 7,766.96, 10,718.07 and 4,230.20 is: 5,837.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,766.96 : 10,718.07 = 4,230.20 : x
  2. Step 2: Convert to fraction form
    7,766.96/10,718.07 = 4,230.20/x
  3. Step 3: Cross multiply
    7,766.96x = 10,718.07 × 4,230.20
  4. Step 4: Simplify right side
    7,766.96x = 45,339,579.71
  5. Step 5: Solve for x
    x = 45,339,579.71/7,766.96
  6. Step 6: Final answer
    x = 5,837.49

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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.